| Cite this article: | 付佳祥,李晓爽,于丽娜,等.灌溉制度对冬小麦茎基腐病及产量的响应研究[J].灌溉排水学报,0,():-. |
| FU Jia-xiang,Lixiaoshuang,YU Li-na,et al.灌溉制度对冬小麦茎基腐病及产量的响应研究[J].灌溉排水学报,0,():-. |
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| Study on the Effect of Irrigation Schedule on Stalk Rot and Yield of winter wheat |
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FU Jia-xiang1, Lixiaoshuang2, YU Li-na3, KE Yan-jun3, LIU Hong-quan1, DANG Hong-kai4, MA Jun-yong4
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1.Hebei Agricultural University;2.Hengshui University;3.Zaoqiang County Agriculture and Rural Bureau;4.Institute of Dry Farming,Hebei Academy of Agriculture and Forestry Sciences
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| Abstract: |
| 【Background】With the development of economy, people have great demand for the use of water resources and the yield of crops. In recent years, the frequent occurrence of stalk base rot has seriously affected the yield of crops. The stalk base rot mainly affects the absorption of water in the soil by the rot of the roots. A suitable irrigation system can increase the moisture content of the soil surface and select disease-resistant varieties to reduce the impact of stalk rot on yield, but too many irrigation times may be beneficial to the spread of pathogens and will inevitably waste too much water resources. Choose suitable irrigation systems and varieties to achieve high yield, disease resistance and water saving. At present, there are very few studies on the effects of combined irrigation systems and varieties on the susceptibility and yield of winter wheat stem rot.【Objective】Aiming at the occurrence of stalk rot, explore the optimal combination of irrigation systems and varieties to minimize the yield loss caused by stalk rot infection.【Method】The experiment adopted a split zone design, with 5 irrigation systems in spring as the main treatment (non-irrigated control treatment-W0, 1 water-W1, 2 water-W2, 3 water-W3, 4 water-W4), with 3 different types of wheat Varieties are side treatments (wheat varieties are Hengguan 35, Ji 22, Heng 9966) to study the effects of different irrigation systems and varieties on the susceptibility of stalk base rot, soil moisture content and yield.【Results】Different irrigation regimes have significant effects on winter wheat stem rot. Compared with other treatments, treatments W3 and W4 have the highest probability of not suffering from stalk rot, and the lowest probability of suffering from severe stem rot. The disease resistance of H 9966 is comparable to Guan 35 and Ji 22 should be strong; the vertical distribution of water content of each soil layer in different growth periods of wheat varies greatly. In the mature period, it can be seen from the soil water content that the more irrigation times, the more unused remaining water in the soil; Under the influence of the disease, the yields of the three varieties under different irrigation treatments were W4> W3> W1> W2> W0, and the yields of the varieties were Heng 9966> Guan 35> Ji 22; according to the prevalence of stem rot Regression analysis was performed on the converted output and the actual output, and it was concluded that the fit between the converted output and the actual output was very high, and the fitting effect of Ji 22 was the best; the three varieties had the largest yield loss in the treatment of W0, and W3 and W4 were smaller. And the output loss of Heng 9966 is smaller than that of Guan 35 and Ji 22.【Conclusion】Under the influence of stem base rot, it is recommended to irrigate 3 waters in spring. The variety of Heng 9966 can effectively reduce the susceptibility rate of stem base rot and increase the yield of winter wheat on the basis of reducing water consumption. |
| Key words: Winter wheat; Irrigation system; Variety; Stem rot; Yield |
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