Lodging resistant wheat varieties
Lodging is a phenomenon that wheat lodges in large areas during the middle and late stages of wheat growth due to climate factors or improper cultivation measures, which seriously affects wheat maturity and results in yield reduction. So what are the lodging resistant wheat varieties?
1. Lodging resistant varieties
High-yielding wheat area to select strong resistance, comprehensive characters of good lodging resistance varieties. For example, Yumai 18, Wenmai 4, Jimai 38, Jinmai 48, Wanmai 26, 28, Zinong 033, Lumai 22, 23, Huamai 8, Chuanmai 24, 25, Mianyang 25, 26, Rongmai 1, Chuannongmai 1, Shuwan 41, Guifeng 1, Xinong 881, 1376, Xindong 18, 19, 20, etc. Jinmai 13, Kenhong 13, Kenjiu 5, Longmai 23, Yunlong 1, Longchun 15, Ningchun 21, Ningchun 22, Longchun 8139, Dingfeng 3 and other spring wheat lodging-resistant varieties can be selected in spring wheat area. The proportion of high-yield varieties is coordinated, and the layout is reasonable, so that the yield will not be reduced in disaster years and the yield will be higher in favorable weather years.
II. Fertilizer and water treatment
High-yield wheat fields must be irrigated with winter water, jointing water and grouting water in time, and generally do not irrigate green water and wheat yellow water. In spring, the main control period is to control fertilizer and water, until the second leaf of wheat is exposed, watering after jointing, and topdressing as appropriate. The length of the first internode 4.5-5.7cm and the length of the second internode 7.6-8.5cm were more resistant to lodging. If watering is needed in the later stage, it must be based on the weather forecast, master the principle of not watering before wind and rain, and stop watering with wind and rain, and scientifically manage fertilizer water.
III. Pest control
Comprehensive control measures should be taken for wheat sheath blight, white scab and aphids. Once the control index is reached, spray in time to increase the stress resistance and lodging resistance of wheat.
Although the impact of wheat lodging is very large, it can be effectively resisted by various techniques to increase the immunity of wheat. If lodging occurs, it should be remedied in time to avoid large-scale yield reduction.
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