病、虫、草三害,一般都采用化学农药防治。但近年来,农药供与求失调,农药紧缺,影响了农业生产。对此,我们经过试验实践,就地取材加工制作土农药来代替化学农药,既经济、安全,又无残毒和污染,防治效果非常理想,很值得推广,不妨一试。一、利用人尿防病治虫 1.人尿治果树腐烂病,治愈率达93.3％。方法是,用利刀先将病疤周围割一圈,深达木质部。然 Diseases, insects, grass three hazards, are generally used chemical pesticide control. However, in recent years, pesticide supply and demand disorders, shortage of pesticides, affecting agricultural production. In this regard, we have tried our best to make native pesticides instead of chemical pesticides. It is economical and safe without any residue or pollution. The prevention and treatment effect is very satisfactory and it is worth promoting. First, the use of human urine disease prevention and control pest 1. Human urine governance tree rot disease, the cure rate of 93.3%. The method is to use a knife to cut around the scar first circle, deep xylem. Of course