河南省水稻产区,利用蜘蛛防治稻田害虫效果显著。为我国农村生物防治又开辟了一条新途径。据调查,我国田间蜘蛛有1000多种,仅稻田蜘蛛就有120多种,每亩地可达几万至几十万只,它们是以稻飞虱、稻叶蝉、卷叶螟、螟蛾、粘虫、玉米螟、栗灰螟、地老虎、棉蚜、红铃虫、菜青虫、桃蛀螟等害虫为主食。一只蜘蛛一天能吞食害虫10—20多只,占所有捕食性天敌食量的70—95％。它们活动于禾苗的上部、中部和下部,形成了一个庞大的防御体系,蜘蛛食量大,捕食能力强,既使在吃饱的情况下,也会将害虫咬死,一只成蛛每天可捕食20 Rice producing areas in Henan Province, the use of spiders to control rice pests significant effect. It has opened up a new way for the biological control of our country. According to the survey, there are more than 1,000 kinds of spiders in the field in our country. There are over 120 kinds of spiders in paddy fields alone, with tens of thousands to hundreds of thousands per mu. They are planthoppers, rice leafhoppers, leafroller, , Armyworms, corn borer, chestnut gray borer, to the tiger, cotton aphid, pink bollworm, Pieris rapae, peach borer and other pests as the staple food. A spider can devour more than 10-20 pests a day, accounting for 70-95% of all predatory natural enemies. They are active in the upper, middle and lower parts of the seedlings, forming a huge defensive system. The spider has large food intake and strong predation ability. Even in full feeding, insects will be killed and one can become a predator per day 20