| Cite this article: | 代丽萍,史海滨,苗庆丰,等.水药耦合对盐渍化灌区玉米生长与产量品质的影响研究[J].灌溉排水学报,0,():-. |
| Dai Liping,SHI Haibin,MIAO Qingfeng,et al.水药耦合对盐渍化灌区玉米生长与产量品质的影响研究[J].灌溉排水学报,0,():-. |
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| This article has been：Browse 2023Times Download 0Times |
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| Effects of Different Water and Herbicide Treatments on Maize Growth and Yield Quality in Salinized Irrigation District |
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Dai Liping1, SHI Haibin1,2,3,2, MIAO Qingfeng1, LIU Meihan1, SUN Wei1, FENG Zhuangzhuang1
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1.School of Water Conservancy and Civil Engineering,Inner Mongolia Agricultural University;2.China;3.High-efficiency Water-saving Technology and Equipment and Water and Soil Environmental Effects Inner Mongolia Autonomous Region Engineering Research Center
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| Abstract: |
| 【Objective】In order to explore the effects of irrigation water and pesticides on crop growth indicators and maize yield and quality during the growth period of maize, formulate the irrigation system and pesticide application level for the development of green agriculture in the Hetao Irrigation District, and solve the serious soil salinization and pesticide use in the Hetao Irrigation District low rate and other issues.【Method】The lysimeter was used to guide the pits irrigation and treated with different water medicines: (1) The same application rate P2 (local application rate of 125mL/667m2 reduced by 30%), 3 irrigation levels W1 (0.8ET), W2 (1.0ET), W3 (1.2ET), (2) the same irrigation quota (1.0ET), set 3 application rates P1 (local application rate 125mL/667m2 reduced by 10%), P2, P0 (manual weeding) .【Result】The results showed that the relative chlorophyll content (SPAD) of the leaves of each treatment when the 24% Nicotin.Atrazine application rate was P2 and P1 treatments decreased for a short time due to stress after the application. The normal level can be restored after 9d. Compared with the control group P0, P2 treatment reduced 100-seed weight, dry matter, and yield by only 1.2%, 3.8%, and 1.7%, the reduction was not significant and there was no significant difference (p>0.05). Compared with W1, the 100-seed weight, dry matter, and yield of W2 increased by 5.0%, 35.1%, and 19.0%, with significant differences (p<0.05). The pesticide residues in maize kernels of all treatments were lower than the national standards, and the residues of atrazine in mature maize kernels were about the same; while the residues of nicosulfuron in W1P2, W2P2, W3P2, and P1W2 treatments were 87.83, 42.76, respectively. 37.86 and 21.82μg/kg, which are positively correlated with the application amount, and negatively correlated with the irrigation quota. The water use efficiency (WUE) of each treatment of the control drug was P2>P0>P1, and there was no significant difference between P2 and P0 treatments (p>0.05). The water use efficiency (WUE) of each treatment of water control was W2>W1>W3, and W2 was significantly different from W1 and W3 (p>0.05). Compared with the local irrigation level (approximately 400mm), W2 treatment saves 16.9% of water, and the water saving effect is obvious【Conclusion】W2P2 processing for the purpose of saving water, reducing medicines and reducing resource waste is the optimal production mode suitable for local development of green agriculture and reducing resource waste. |
| Key words: lysimeters; test-pits experiment; herbicide; 24% Nicosulfuron Atrazine; maize yield; salinized irrigation district |
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