湖南省钱粮湖农场是个老棉区,一般每年植棉7万亩左右。以前,这个农场棉田治虫是以化学农药为主。1976年以来,开始研究应用以保护、利用自然天敌为主的综合防治措施,发挥“天然盟友”的作用,取得了较好的效果,特别是近三年的效果显著,大幅度地降低了农药成本。以前,平均每亩农药成本5元多,生产百斤 Qianli Lake Farm in Hunan Province is an old cotton area, with an average annual planting area of ​​about 70,000 mu. Previously, the farm cotton worm control is dominated by chemical pesticides. Since 1976, research and application of comprehensive natural prevention and control measures based on natural enemies have begun to be explored and played the role of a “natural alliance” and achieved good results. In particular, the results of the past three years have been remarkable, and pesticides have been drastically reduced cost. Previously, the average cost per acre more than 5 yuan pesticides, production jin