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什么是水稻螟害的危险期?什么是安全期?一般认为:秧苗期、分蘖期、孕穗期—尤其是始穗期,由于蚁螟易于侵入,属螟害危险期;圆杆期及齐穗期以后称为螟安全害期。我认为把整个圆秆期笼统称为安全期这个提法是不够确切。 我对这个问题的认识是从1977年开始的。1977年,在早造第二代螟卵盛孵期间,我所蹲点的城厢公社厢西大队坡顶生产队的汕伏2号,正处于幼穗分化3—4期,根据书上资料,认为禾苗已圆秆了,没有施药,结果确实没有螟害枯心出现。但是其他相邻的几个生产队的汕伏2号,螟害枯心都很严
What is the danger period of rice stem borer? What is the safety period? It is generally believed that: seedling stage, tillering stage, booting stage - especially the beginning of the heading stage, After the period known as borer safety period. I think it is not precise enough to refer to the term round-the-clock as the term of safety. My understanding of this issue began in 1977. In 1977, in the early generation of the second generation of borer egg Sheng Sheng hatch, I stay in the Chengxiang commune, West Brigade Slope Production Team Shanyu 2, is 3-4 years of panicle differentiation, according to the book information that Seedlings have round stalk, no pesticide application, the results did not appear to bore borers. However, several other neighboring production teams Shanyu 2, borer withered are very strict