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根区施药是近年来新发展的一种施药技术,由于它具有许多优点,而引起人们重视。国际水稻研究所较早开展是项研究,已取得许多成果。我国华南农学院也在这方面做了不少研究工作。为了明确稻田根区施药对本省水稻主要害虫的防治效果和残效期,以及有效药剂的种类、用量和施用技术,1978年我们在桐乡县留良公社华光大队开展全年粮食高产试验的同时,在大队的支持与帮助下进行了本试验。兹将初步结果择要整理如下:(一)试验和调查方法(一)田间试验:1.早稻试验。分两熟制和三熟制早稻,
Root zone drug application is a newly developed application of technology in recent years, due to its many advantages, which aroused people’s attention. The International Rice Research Institute earlier carried out the study and has achieved many results. South China Agricultural College in our country has also done a lot of research in this area. In order to clarify the rice root zone pesticide application on the main rice pests in the province of the control effect and residual efficiency, as well as the type of effective pharmaceutical agents, dosage and application techniques, in 1978, Tongliang County, the commune Huaguang Brigade to carry out annual grain yield test , With the support and help of the brigade conducted this experiment. The preliminary results will be summarized as follows: (a) test and survey methods (a) field test: 1 early rice test. Divided into two cooked and three cooked early rice,