摘要
研究了以蝗虫微孢子虫防治为主 ,协调其它措施持续治理稻蝗的方法。以蝗虫微孢子虫 1 5× 1 0 10 孢子 /hm2 感染蝗虫 ,3 0d后 ,虫口减退率达 6 5 4% ;仿生农药卡死克与微孢子虫条带式协调喷施 ,以间隔喷施面积 3∶1为最好 ,施放后第 7d ,虫口减退率 73 9% ;45d后 ,防治效果仍达 6 1 6 %。
A new tactics for management of rice grasshoppers, mainly with Nosema locustae, integrated with insect growth regulator and chemical pesticide, was developed in Beijing. The results of field experiments showed that when spray of N.locustae at dosage of 1.5×10 10 spore/hm 2 was used, the population of rice grasshopper, Oxya chinensis reduced 65.4% in 30 d. When 5% Cascade was integrated with N.locustae as stripe sprays (every 3 rows∶1 row), the locust population reduced 73 9% in 7 d and was still effective (61.6%) 45 d after application.
出处
《中国生物防治》
CSCD
北大核心
2001年第3期126-128,共3页
Chinese Journal of Biological Control