农业栽培措施在河北省小麦纹枯病防控中的作用

The Role of Agricultural Cultivation Measures on the Prevention and Control of Wheat Sharp Eyespot in Hebei Province

通过在河北馆陶、宁晋两地设置播种日期、播量及施肥试验,明确以上3种农业栽培措施对小麦纹枯病的防控效果。结果表明,适宜的农业措施可有效控制小麦纹枯病的发生发展。其中,适期晚播可使小麦纹枯病的病株率及病情指数显著降低,对于河北中南部病害较重的地块,选择10月中旬播种,可在不影响产量的基础上有效降低纹枯病危害;穗数45万/667 m2,折合播种量7~8 kg/667 m2可显著降低病情指数、提高产量;在高氮肥(施用15 kg/667 m2)情况下,适量增施钾肥也可显著降低小麦纹枯病病情指数,并有增产效果。

Through setting up sowing date,sowing amount and fertilization experiments in Guantao and Ningjin of Hebei Province,the control effects of the above three agricultural cultivation measures on wheat sharp eyespot were clarified.The results showed that appropriate agricultural measures could effectively control the occurrence and development of wheat sharp eyespot.Of which.The diseased plant rate and disease index of wheat sharp eyespot can be significantly reduced by late sowing at the appropriate time.For the plots with serious disease in the central and southern part of Hebei,sowing in the middle of October can effectively reduce the damage of wheat sharp eyespot without affecting the yield;The number of ears per mu was 450000,which was equivalent to 7~8 kg of sowing amount per mu,which can significantly reduce the disease index and improve the yield;Under the condition of high nitrogen fertilizer(15 kg per mu),the incidence of wheat sharp eyespot can also be significantly reduced and the yield can be increased by adding appropriate amount of potassium fertilizer.