渭北旱原地区农药地下处理对小麦主要病虫的控制效应

Controlling Effects Upon the Main Diseases and Pests of Wheat with Underground Application of Insecticides

在渭北旱区三年的试验表明,供试的5种药剂均有控制小麦黄矮病、麦蚜、麦红蜘蛛,并有增产、保产的作用。涕灭威盖种和3911拌种效果最佳,抗蚜威最差。供试药剂均能增加大田小麦的出苗数和分蘗数,涕灭威盖种、3911拌种和久效磷拌种可使小麦的出苗期和分蘖期提前。药剂处理对麦二叉蚜的控制作用大于麦长管蚜,且不会影响麦红蜘蛛在大田中的聚集程度。

According to the results of three years＇field experiments on the WeibeiRainfed Area,we found 5 kinds of insecticides tried were able to control wheatyellow dwarf,wheat aphids and red spiders,and to increase and insure wheatyields.Temik seed covering and 3911 seed dressing are the best,while Pirimi-carb is the poorest.All the insecticides in testing can increase wheat seedlingsand tillers.Temik seed covering,39911 seed dressing and Nuvacron seed dres-sing make the seedling emerge stage and tillering stage be in advance.Contro-lling effect of five insecticides upon Schizaphis graminum are greater than thatof Macrosiphum avenae,and can not affect the field aggregate degree of wheatred spiders.