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大豆线虫病、根腐病、根潜蝇等三种病虫害的危害;土壤中养分缺乏,肥力下降。是重茬大豆减产的主要原因。针对以上原因,我们连续三年在重茬大豆地块进行包衣大豆种子的试验、示范。其结果:包衣种子与不包衣种子比较:保苗率提高9.6%;大豆根线虫病指数少5.2%;相对防效较其它药剂处理提高10.2%;概括潜蝇危害株率减少39.7%,防治效果43.8%;地下害虫危害株率减少7.2%,防治效果56.1%;平均增产10.5%,经方差分析,差异均达显著。为给将来重茬大豆大力应用这项技术提供初步的理论依据,本文就重茬大豆应用包衣子种后,能够产生的防虫、防病、保苗增产的作用机理进行初步探讨,以并共同商榷。1 种衣剂在防治大豆根线虫病,根腐病,促进植株根系生长方面的作用机理大豆根线虫病是以线虫成虫寄
Soybean nematode disease, root rot, root miner pests and other hazards; lack of nutrients in the soil, fertility decline. Re-crop soybean production is the main reason. In view of the above reasons, we have tested and demonstrated the coated soybean seeds in the continuous cropping soybean plots for three consecutive years. The results showed that compared with the uncoated seeds, seedling coverage rate increased by 9.6%, soybean root worm disease index decreased by 5.2%, relative control efficiency increased by 10.2% The effect was 43.8%; the damage rate of underground pests was reduced by 7.2% and the control effect was 56.1%; the average yield was 10.5%. Significant difference was found by ANOVA. In order to provide a preliminary theoretical basis for vigorously applying this technology to future stubble soybean, this paper discussed the mechanism of pest control, disease prevention and seedling increase after repeated application of the coated seed of soybean. 1 seed clothing in the control of soybean root nematode disease, root rot and promote plant root growth mechanism of action Soybean nematode disease is nematode adult sent