Effect of Water and Nitrogen Coupling Regulation on the Growth, Physiology, Yield, and Quality Attributes of Isatis tinctoria L. in the Oasis Irrigation Area of the Hexi Corridor DOI Creative Commons
Yucai Wang,

Xiaofan Pan,

Haoliang Deng

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(10), P. 2187 - 2187

Published: Sept. 24, 2024

To address the prevailing problems of high water and fertilizer input low productivity in Isatis tinctoria L. production Hexi Corridor China, effects different irrigation amounts nitrogen application rates on growth characteristics, photosynthetic physiology, root yield, quality I. plants were studied with aim obtaining optimal level rate. From 2021 to 2023, we established a two-factor split-plot experiment oasis area three (sufficient water, medium are 100%, 85%, 70% typical local quota) for main zone; (low nitrogen, 150 kg ha−1, 200 250 ha−1) secondary without as control explore response these management patterns terms quality. The results showed following: (1) When amount was increased from 75% 100% quota rate while plant’s height, leaf index, dry matter accumulation stem, leaf, root, well net (Pn), stomatal conductance (Gs), transpiration (Tr) gradually, root–shoot ratio decreased. (2) quota, yield proceeds 43.12% 53.43% 55.07% 71.61%, respectively. However, when 21.58% 23.69%, whereas increase ha−1 resulted decrease 10.66% 18.92%. During 3-year experiment, maximum appeared treated sufficient reaching 9054.68, 8066.79, 8806.15 (3) effect combination treatments significant. Under same level, increasing could contents indigo, indirubin, (R,S)–goitrin, total nucleoside, uridine, adenosine 3.94% 9.59%, 1.74% 12.58%, 5.45% 18.35%, 5.61% 11.59%, 7.34% 11.32%, 14.98% 54.40%, respectively, trend first then decreasing under level. (4) AHP, entropy weight method, TOPSIS method used comprehensive evaluation multiple indexes water–nitrogen coupling planting tinctoria, which W3N2 combination. Therefore, should be appropriately reduced, controlling at 190.30–218.27 can improve yields this study provide theoretical basis technical support more reasonable model industry China.

Language: Английский

Effect of Water and Nitrogen Coupling Regulation on the Growth, Physiology, Yield, and Quality Attributes of Isatis tinctoria L. in the Oasis Irrigation Area of the Hexi Corridor DOI Creative Commons
Yucai Wang,

Xiaofan Pan,

Haoliang Deng

et al.

Agronomy, Journal Year: 2024, Volume and Issue: 14(10), P. 2187 - 2187

Published: Sept. 24, 2024

To address the prevailing problems of high water and fertilizer input low productivity in Isatis tinctoria L. production Hexi Corridor China, effects different irrigation amounts nitrogen application rates on growth characteristics, photosynthetic physiology, root yield, quality I. plants were studied with aim obtaining optimal level rate. From 2021 to 2023, we established a two-factor split-plot experiment oasis area three (sufficient water, medium are 100%, 85%, 70% typical local quota) for main zone; (low nitrogen, 150 kg ha−1, 200 250 ha−1) secondary without as control explore response these management patterns terms quality. The results showed following: (1) When amount was increased from 75% 100% quota rate while plant’s height, leaf index, dry matter accumulation stem, leaf, root, well net (Pn), stomatal conductance (Gs), transpiration (Tr) gradually, root–shoot ratio decreased. (2) quota, yield proceeds 43.12% 53.43% 55.07% 71.61%, respectively. However, when 21.58% 23.69%, whereas increase ha−1 resulted decrease 10.66% 18.92%. During 3-year experiment, maximum appeared treated sufficient reaching 9054.68, 8066.79, 8806.15 (3) effect combination treatments significant. Under same level, increasing could contents indigo, indirubin, (R,S)–goitrin, total nucleoside, uridine, adenosine 3.94% 9.59%, 1.74% 12.58%, 5.45% 18.35%, 5.61% 11.59%, 7.34% 11.32%, 14.98% 54.40%, respectively, trend first then decreasing under level. (4) AHP, entropy weight method, TOPSIS method used comprehensive evaluation multiple indexes water–nitrogen coupling planting tinctoria, which W3N2 combination. Therefore, should be appropriately reduced, controlling at 190.30–218.27 can improve yields this study provide theoretical basis technical support more reasonable model industry China.

Language: Английский

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