{"id":30338,"date":"2020-01-22T15:39:00","date_gmt":"2020-01-22T08:39:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=30338"},"modified":"2021-11-23T22:12:29","modified_gmt":"2021-11-23T15:12:29","slug":"de-tai-nghien-cuu-ve-kha-nang-cai-tao-dat-nhiem-man-va-cai-thien-sinh-truong-nang-suat-rau-mau-bang-nuoc-tuoi-duoc-xu-ly-qua-cong-nghe-tu-truong-va-oxy-hoa-sau","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/de-tai-nghien-cuu-ve-kha-nang-cai-tao-dat-nhiem-man-va-cai-thien-sinh-truong-nang-suat-rau-mau-bang-nuoc-tuoi-duoc-xu-ly-qua-cong-nghe-tu-truong-va-oxy-hoa-sau\/","title":{"rendered":"\u0110\u1ec1 t\u00e0i nghi\u00ean c\u1ee9u v\u1ec1 kh\u1ea3 n\u0103ng c\u1ea3i t\u1ea1o \u0111\u1ea5t nhi\u1ec5m m\u1eb7n v\u00e0 c\u1ea3i thi\u1ec7n sinh tr\u01b0\u1edfng, n\u0103ng su\u1ea5t rau m\u00e0u b\u1eb1ng n\u01b0\u1edbc t\u01b0\u1edbi \u0111\u01b0\u1ee3c x\u1eed l\u00fd qua c\u00f4ng ngh\u1ec7 t\u1eeb tr\u01b0\u1eddng v\u00e0 oxy h\u00f3a s\u00e2u"},"content":{"rendered":"\n

Hi\u1ec7n nay, c\u00f4ng ngh\u1ec7 t\u1eeb t\u00ednh h\u00f3a trong x\u1eed l\u00fd v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc t\u01b0\u1edbi nhi\u1ec5m m\u1eb7n \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u nhi\u1ec1u tr\u00ean th\u1ebf gi\u1edbi. \u0110\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p kinh t\u1ebf, mang l\u1ea1i hi\u1ec7u qu\u1ea3 x\u1eed l\u00fd n\u01b0\u1edbc t\u01b0\u1edbi nhi\u1ec5m m\u1eb7n, c\u1ea3i thi\u1ec7n n\u0103ng su\u1ea5t c\u00e2y tr\u1ed3ng v\u00e0 mang l\u1ea1i hi\u1ec7u qu\u1ea3 r\u1eeda m\u1eb7n \u0111\u1ea5t kh\u00e1 cao. V\u00ec v\u1eady, \u0111\u1ec1 t\u00e0i b\u01b0\u1edbc \u0111\u1ea7u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n nh\u1eb1m: (i) \u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 x\u1eed l\u00fd n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng k\u1ebft h\u1ee3p oxy h\u00f3a v\u00e0 va \u0111\u1eadp ph\u00e2n t\u1eed v\u00e0 (ii) \u0110\u00e1nh gi\u00e1 hi\u1ec7u qu\u1ea3 c\u1ee7a n\u01b0\u1edbc t\u01b0\u1edbi t\u1eeb tr\u01b0\u1eddng trong c\u1ea3i thi\u1ec7n h\u00f3a h\u1ecdc \u0111\u1ea5t ph\u00f9 sa nhi\u1ec5m m\u1eb7n, s\u1ef1 sinh tr\u01b0\u1edfng, v\u00e0 n\u0103ng su\u1ea5t rau m\u00e0u (Brassica juncea L.) canh t\u00e1c trong \u0111i\u1ec1u ki\u1ec7n nh\u00e0 l\u01b0\u1edbi.<\/p>\n\n\n\n

Ba m\u1ee9c \u0111\u1ed9 n\u01b0\u1edbc s\u00f4ng nhi\u1ec5m m\u1eb7n nh\u00e2n t\u1ea1o \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m b\u1eb1ng c\u00e1ch pha lo\u00e3ng n\u01b0\u1edbc \u201c\u00f3t\u201d v\u1edbi n\u01b0\u1edbc s\u00f4ng kh\u00f4ng m\u1eb7n th\u00e0nh c\u00e1c m\u1eabu n\u01b0\u1edbc c\u00f3 \u0111\u1ed9 m\u1eb7n kh\u00e1c nhau (0\u2030, 3\u2030 v\u00e0 5\u2030); sau \u0111\u00f3, cho x\u1eed l\u00fd t\u1eeb t\u00ednh b\u1eb1ng c\u00e1ch ch\u1ea1y 2 l\u1ea7n qua h\u1ec7 th\u1ed1ng x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng t\u00edch h\u1ee3p (2000-4000 Gauss, \u0111i\u1ec7n ph\u00e2n 5-12 volt, 0,8 Ampe, l\u01b0u l\u01b0\u1ee3ng 2-3 m3<\/sup>\/gi\u1edd). Ph\u01b0\u01a1ng ph\u00e1p thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n c\u00f3 tr\u00ecnh t\u1ef1 s\u1eafp x\u1ebfp c\u1ee7a h\u1ec7 th\u1ed1ng g\u1ed3m: (1) ph\u1ed1i tr\u1ed9n kh\u00ed, (2) nam ch\u00e2m v\u0129nh c\u1eedu (3000 Gauss) v\u00e0 (3) b\u1ec3 \u0111i\u1ec7n ph\u00e2n (8 Volt v\u00e0 0,8 Ampe) \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp song song v\u1edbi nhau, sau \u0111\u00f3, c\u00e1c d\u00f2ng ch\u1ea3y s\u1ebd \u0111\u01b0\u1ee3c ph\u1ed1i tr\u1ed9n l\u1ea1i (4) b\u1ed9 ph\u1eadn va \u0111\u1eadp ph\u00e2n t\u1eed tr\u01b0\u1edbc khi thu m\u1eabu n\u01b0\u1edbc \u0111\u00e3 x\u1eed l\u00fd cho ph\u00e2n t\u00edch.<\/p>\n\n\n\n

Ch\u1ec9 ti\u00eau, ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n tr\u01b0\u1edbc v\u00e0 sau x\u1eed l\u00fd: Ch\u1ea5t l\u01b0\u1ee3ng m\u1eabu n\u01b0\u1edbc \u0111\u1ea7u v\u00e0o (tr\u01b0\u1edbc khi x\u1eed l\u00fd) v\u00e0 \u0111\u1ea7u ra (sau khi x\u1eed l\u00fd) c\u1ee7a h\u1ec7 th\u1ed1ng x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng t\u00edch h\u1ee3p s\u1ebd \u0111\u01b0\u1ee3c thu v\u00e0 ph\u00e2n t\u00edch ngay trong ng\u00e0y \u0111\u1ec3 ki\u1ec3m tra c\u00e1c ch\u1ec9 ti\u00eau \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc nh\u01b0: pH, EC, Na+<\/sup>, K+<\/sup>, Ca2+<\/sup>, Mg2+<\/sup>,HCO3–<\/sup>, Cl–<\/sup>, SO4<\/sub>2-<\/sup>, SAR, TDS.<\/p>\n\n\n\n

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Tr\u1ecb s\u1ed1 pH n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd (XL) \u0111i\u1ec7n t\u1eeb t\u00ednh.<\/em>
 <\/figcaption><\/figure><\/div>\n\n\n\n
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\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n n\u01b0\u1edbc (EC) tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd (XL) \u0111i\u1ec7n t\u1eeb t\u00ednh.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n
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H\u00e0m l\u01b0\u1ee3ng c\u00e1c cation h\u00f2a tan (mg\/L) trong n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n tr\u01b0\u1edbc v\u00e0<\/em>
sau khi x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n
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Tr\u1ecb s\u1ed1 SAR n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd (XL) \u0111i\u1ec7n t\u1eeb t\u00ednh.<\/em>
Ghi ch\u00fa: (*) v\u00e0 (**) kh\u00e1c bi\u1ec7t th\u1ed1ng k\u00ea tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb t\u00ednh n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n \u1edf m\u1ee9c \u00fd ngh\u0129a 5% v\u00e0 1% qua ki\u1ec3m \u0111\u1ecbnh paired t-test, ph\u1ea7n m\u1ec1n MiniTab\/Version 16; thanh \u0111\u1ee9ng: \u0111\u1ea1i di\u1ec7n cho \u0111\u1ed9 l\u1ec7ch chu\u1ea9n (standard deviation, n = 12 l\u1eb7p l\u1ea1i cho m\u1eabu n\u01b0\u1edbc s\u00f4ng).<\/em><\/figcaption><\/figure><\/div>\n\n\n\n
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H\u00e0m l\u01b0\u1ee3ng c\u00e1c anion h\u00f2a tan (mg\/L) trong n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n tr\u01b0\u1edbc v\u00e0 sau<\/em>
khi x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n
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T\u1ed5ng ch\u1ea5t r\u1eafn h\u00f2a tan (TDS) n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd<\/em>
(XL) \u0111i\u1ec7n t\u1eeb t\u00ednh.<\/em>
Ghi ch\u00fa: TDS: Total Dissolve Solid; (*) kh\u00e1c bi\u1ec7t th\u1ed1ng k\u00ea tr\u01b0\u1edbc v\u00e0 sau khi x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb t\u00ednh n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n \u1edf m\u1ee9c \u00fd ngh\u0129a 5% qua ki\u1ec3m \u0111\u1ecbnh paired t-test, ph\u1ea7n m\u1ec1n MiniTab\/Version 16; \u201cns\u201d: kh\u00f4ng kh\u00e1c bi\u1ec7t th\u1ed1ng k\u00ea; thanh \u0111\u1ee9ng: \u0111\u1ea1i di\u1ec7n cho \u0111\u1ed9 l\u1ec7ch chu\u1ea9n (standard deviation, n = 12 l\u1eb7p l\u1ea1i cho m\u1eabu n\u01b0\u1edbc s\u00f4ng).<\/em><\/figcaption><\/figure><\/div>\n\n\n\n

Th\u00ed nghi\u1ec7m tr\u1ed3ng c\u1ea3i trong ch\u1eadu (ch\u1ee9a 10 kg \u0111\u1ea5t nhi\u1ec5m m\u1eb7n) \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed ho\u00e0n to\u00e0n ng\u1eabu nhi\u00ean (CRD), 4 l\u1eb7p l\u1ea1i cho 4 lo\u1ea1i n\u01b0\u1edbc t\u01b0\u1edbi (n\u01b0\u1edbc c\u1ea5p th\u00f4ng th\u01b0\u1eddng, n\u01b0\u1edbc c\u1ea5p x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng, n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n 3\u2030 v\u00e0 n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n 3\u2030 \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng). K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m cho th\u1ea5y x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng l\u00e0m c\u1ea3i thi\u1ec7n r\u1ea5t \u00fd ngh\u0129a ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n: gi\u1ea3m \u0111\u1ed9 m\u1eb7n (EC) c\u1ee7a n\u01b0\u1edbc, \u0111\u1eb7c bi\u1ec7t \u1edf m\u1ee9c nhi\u1ec5m m\u1eb7n 3\u2030, gi\u1ea3m t\u1ef7 s\u1ed1 h\u1ea5p ph\u1ee5 natri (SAR) v\u00e0 t\u1ed5ng ch\u1ea5t r\u1eafn h\u00f2a tan (TDS) trong n\u01b0\u1edbc sau x\u1eed l\u00fd (trung b\u00ecnh gi\u1ea3m 6,2%, 8,0% v\u00e0 7,9% cho EC, SAR v\u00e0 TDS).<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 c\u0169ng cho th\u1ea5y s\u1ef1 suy gi\u1ea3m \u00fd ngh\u0129a v\u1ec1 h\u00e0m l\u01b0\u1ee3ng c\u00e1c ion h\u00f2a tan (Na+<\/sup>, K+<\/sup>,Mg2+<\/sup>, SO4<\/sub>2-<\/sup>, Cl–<\/sup>, HCO3–<\/sup>) trong n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n sau x\u1eed l\u00fd \u1edf ba m\u1ee9c \u0111\u1ed9 nhi\u1ec5m m\u1eb7n kh\u00e1c nhau. K\u1ebft qu\u1ea3 th\u00ed nghi\u1ec7m trong ch\u1eadu cho th\u1ea5y t\u01b0\u1edbi n\u01b0\u1edbc \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng (n\u01b0\u1edbc c\u1ea5p ho\u1eb7c n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n 3\u2030) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3i thi\u1ec7n \u0111\u1ed9 m\u1eb7n c\u1ee7a \u0111\u1ea5t: gi\u1ea3m ECe, gi\u1ea3m t\u1ef7 s\u1ed1 h\u1ea5p ph\u1ee5 natri (SAR). \u0110\u1eb7c bi\u1ec7t, t\u01b0\u1edbi n\u01b0\u1edbc c\u1ea5p \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng gi\u00fap gi\u1ea3m \u00fd ngh\u0129a h\u00e0m l\u01b0\u1ee3ng Na+ trao \u0111\u1ed5i trong \u0111\u1ea5t (0,64 meq Na+\/100g; gi\u1ea3m 52,9% \u0111\u1ea5t \u0111\u1ea7u v\u1ee5) so v\u1edbi nghi\u1ec7m th\u1ee9c t\u01b0\u1edbi n\u01b0\u1edbc c\u1ea5p th\u00f4ng th\u01b0\u1eddng (0,77 meq Na+\/100g; gi\u1ea3m 36,4% \u0111\u1ea5t \u0111\u1ea7u v\u1ee5). \u0110i\u1ec1u n\u00e0y, g\u00f3p ph\u1ea7n l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng trao \u0111\u1ed5i natri (ESP) c\u1ee7a \u0111\u1ea5t. T\u01b0\u1edbi n\u01b0\u1edbc \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng (n\u01b0\u1edbc c\u1ea5p, n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n) kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00e0m l\u01b0\u1ee3ng c\u00e1c cation trao \u0111\u1ed5i (Ca2+<\/sup>, Mg2+<\/sup>) v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p ph\u1ee5 cation c\u1ee7a \u0111\u1ea5t (CEC). T\u01b0\u1edbi n\u01b0\u1edbc t\u1eeb tr\u01b0\u1eddng c\u0169ng \u00fd ngh\u0129a trong vi\u1ec7c gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng Cl–<\/sup> v\u00e0 SO4<\/sub>2-<\/sup> h\u00f2a tan trong \u0111\u1ea5t nhi\u1ec5m m\u1eb7n. B\u01b0\u1edbc \u0111\u1ea7u cho th\u1ea5y t\u01b0\u1edbi n\u01b0\u1edbc \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng gi\u00fap t\u0103ng chi\u1ec1u cao c\u00e2y (t\u0103ng 3,3% -7,5%) v\u00e0 chi\u1ec1u r\u1ed9ng l\u00e1 (t\u0103ng 9,5%- 12,1%) c\u1ee7a c\u1ea3i xanh, do \u0111\u00f3, g\u00f3p ph\u1ea7n c\u1ea3i thi\u1ec7n n\u0103ng su\u1ea5t t\u01b0\u01a1i (t\u0103ng trung b\u00ecnh 6,6%) v\u00e0 sinh kh\u1ed1i kh\u00f4 (t\u0103ng trung b\u00ecnh 12,0%) c\u1ee7a c\u1ea3i xanh th\u00ed nghi\u1ec7m so v\u1edbi t\u01b0\u1edbi tr\u1ef1c ti\u1ebfp n\u01b0\u1edbc m\u1eb7n kh\u00f4ng qua x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng.<\/p>\n\n\n\n

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T\u00ednh ch\u1ea5t h\u00f3a h\u1ecdc n\u01b0\u1edbc t\u01b0\u1edbi tr\u01b0\u1edbc v\u00e0 sau x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n
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\u1ea2nh h\u01b0\u1edfng c\u1ee7a n\u01b0\u1edbc t\u01b0\u1edbi t\u1eeb tr\u01b0\u1eddng tr\u00ean c\u00e1c ch\u1ec9 s\u1ed1 sinh tr\u01b0\u1edfng c\u1ea3i xanh<\/em>
th\u1eddi \u0111i\u1ec3m thu ho\u1ea1ch.<\/em>
Ghi ch\u00fa: Trong c\u00f9ng m\u1ed9t c\u1ed9t, c\u00e1c s\u1ed1 theo sau b\u1edfi c\u00e1c ch\u1eef c\u00e1i gi\u1ed1ng nhau th\u00ec kh\u00f4ng kh\u00e1c nhau \u1edf m\u1ee9c \u00fd ngh\u0129a 1%, p < 0,01 (**) theo ph\u00e9p ki\u1ec3m \u0111\u1ecbnh Tukey\/MiniTab\/Version 16, n = 4 l\u1eb7p l\u1ea1i cho m\u1ed7i nghi\u1ec7m th\u1ee9c; TL: Tr\u1ecdng l\u01b0\u1ee3ng; SPAD: Soil Plant Analysis Development<\/em><\/figcaption><\/figure><\/div>\n\n\n\n
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Hi\u1ec7u qu\u1ea3 c\u1ee7a t\u01b0\u1edbi n\u01b0\u1edbc c\u1ea5p v\u00e0 n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n 3\u2030 \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb<\/em>
tr\u01b0\u1eddng tr\u00ean sinh tr\u01b0\u1edfng c\u1ea3i xanh tr\u1ed3ng tr\u00ean \u0111\u1ea5t nhi\u1ec5m m\u1eb7n \u0111i\u1ec1u ki\u1ec7n nh\u00e0 l\u01b0\u1edbi.<\/em><\/figcaption><\/figure><\/div>\n\n\n\n

K\u1ebft qu\u1ea3 x\u1eed l\u00fd n\u01b0\u1edbc s\u00f4ng nhi\u1ec5m m\u1eb7n b\u01b0\u1edbc \u0111\u1ea7u cho th\u1ea5y \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc t\u01b0\u1edbi nhi\u1ec5m m\u1eb7n (pH, \u0111\u1ed9 m\u1eb7n EC, ch\u1ec9 s\u1ed1 SAR, TDS, c\u00e1c cation v\u00e0 anion h\u00f2a tan) v\u1edbi \u0111\u1ed9 m\u1eb7n n\u01b0\u1edbc c\u00f3 th\u1ec3 t\u0103ng \u0111\u1ebfn 5\u2030. Tuy nhi\u00ean, hi\u1ec7u su\u1ea5t x\u1eed l\u00fd t\u1ed1t nh\u1ea5t khi \u0111\u1ed9 m\u1eb7n n\u01b0\u1edbc l\u00e0 3\u2030. N\u01b0\u1edbc \u0111\u01b0\u1ee3c x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng (n\u01b0\u1edbc c\u1ea5p, n\u01b0\u1edbc nhi\u1ec5m m\u1eb7n 3\u2030) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u01b0\u1edbi ti\u00eau, c\u1ea3i thi\u1ec7n \u0111\u1ed9 m\u1eb7n c\u1ee7a \u0111\u1ea5t nh\u01b0: gi\u1ea3m ECe, gi\u1ea3m t\u1ec9 s\u1ed1 h\u1ea5p ph\u1ee5 natri (SAR) v\u00e0 kh\u1ea3 n\u0103ng trao \u0111\u1ed5i natri (ESP) c\u1ee7a \u0111\u1ea5t, gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng Na+ trao \u0111\u1ed5i trong keo \u0111\u1ea5t, gi\u1ea3m h\u00e0m l\u01b0\u1ee3ng Cl–<\/sup> v\u00e0 SO4 <\/sub>2-<\/sup> h\u00f2a tan trong \u0111\u1ea5t nhi\u1ec5m m\u1eb7n, kh\u00f4ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn h\u00e0m l\u01b0\u1ee3ng c\u00e1c cation trao \u0111\u1ed5i (Ca2+<\/sup>, Mg2+<\/sup>) v\u00e0 kh\u1ea3 n\u0103ng h\u1ea5p ph\u1ee5 cation c\u1ee7a \u0111\u1ea5t (CEC). K\u1ebft qu\u1ea3 n\u00e0y cho th\u1ea5y k\u1ef9 thu\u1eadt x\u1eed l\u00fd \u0111i\u1ec7n t\u1eeb tr\u01b0\u1eddng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u1ec1 ngh\u1ecb \u1ee9ng d\u1ee5ng nh\u1eb1m x\u1eed l\u00fd c\u00e1c ngu\u1ed3n n\u01b0\u1edbc t\u01b0\u1edbi nhi\u1ec5m m\u1eb7n k\u00e9m ch\u1ea5t l\u01b0\u1ee3ng cho n\u00f4ng d\u00e2n c\u00e1c t\u1ec9nh ven bi\u1ec3n \u0110\u1ed3ng b\u1eb1ng s\u00f4ng C\u1eedu Long.<\/p>\n\n\n\n

<\/p>\n\n\n\n

Nguy\u1ec5n Th\u1ecb V\u00e2n<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Hi\u1ec7n nay, c\u00f4ng ngh\u1ec7 t\u1eeb t\u00ednh h\u00f3a trong x\u1eed l\u00fd v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng n\u01b0\u1edbc t\u01b0\u1edbi nhi\u1ec5m m\u1eb7n \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u nhi\u1ec1u tr\u00ean th\u1ebf gi\u1edbi. \u0110\u00e2y \u0111\u01b0\u1ee3c xem l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p kinh t\u1ebf, mang l\u1ea1i hi\u1ec7u qu\u1ea3 x\u1eed l\u00fd n\u01b0\u1edbc t\u01b0\u1edbi nhi\u1ec5m m\u1eb7n, c\u1ea3i thi\u1ec7n n\u0103ng su\u1ea5t c\u00e2y tr\u1ed3ng v\u00e0 mang l\u1ea1i […]<\/p>\n","protected":false},"author":25,"featured_media":30350,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-30338","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30338","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=30338"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30338\/revisions"}],"predecessor-version":[{"id":30513,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/30338\/revisions\/30513"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/30350"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=30338"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=30338"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=30338"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}