农药深施也叫根区施药,是施药技术上的一项革新。它是将农药掺入其他成份做成药丸、粒剂或胶囊等用手或机具施入泥中,然后通过农药的内吸作用,达到消灭病虫的目的。据国外报导,它比常规的施药方法有着明显的优越性。为此,我们于去年晚稻生长期间进行了初步试验,采用3％呋喃丹颗粒剂、25％杀虫脒水剂、4O％乐果乳剂、乙酰甲胺磷、乙六粉、5O％托布津、40％稻瘟净、50％杀螟松、多菌灵等九种农药拌黄土做成药丸深施,并考察深施农药后对稻飞虱的密度及其天敌蜘蛛、黑肩绿盲蝽密度影响等情况。现将试验情况初报如下: Deep-rooted pesticides, also known as root zone drug application, is a technical innovation. It incorporates pesticides into other ingredients made of pills, granules or capsules and other hand or machine into the mud, and then through the absorption of pesticides to achieve the purpose of eliminating pests. According to foreign reports, it has obvious advantages over the conventional method of application. For this reason, we carried out preliminary tests during the late rice growth last year. We used 3% carbofuran granules, 25% Chlordimeform, 40% dimethoate, Acephate, B6 powder, 50% Topazin, 40% rice blast net, 50% fenitrothion, carbendazim nine kinds of pesticides mixed with loess made of pills deep application of pesticides and deep pest insects on planthopper density and its natural enemy Spiders, Influence and so on. The first test case is reported as follows: