井岗霉素、杀虫单，作为水稻纹枯病、螟虫的常规防治品种，已连续使用多年。近年来，各地反映效果不及当初。于是，主张提高用量或增加施药次数的两种观点存在。１９９７年本站在水稻破口初期，对上述两种药剂不同用量和有效控制期，共同进行了比较试验，现将结果报告如下... Jinggangmycin, insecticide alone, as rice sheath blight, stem borer conventional control varieties, has been used continuously for many years. In recent years, the results have not been reflected in all parts of the country. As a result, there are two arguments for raising the dosage or increasing the number of applications. In 1997, at the early stage of rice breakage, this station carried out comparative experiments on the different dosages and effective control periods of the above two kinds of medicaments, and the results are reported as follows ...