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“7216”杀虫菌是一种高效细菌性微生物农药,是“以菌治虫”防治农林害虫的新型杀虫剂。对鳞翅目、膜翅目的多种害虫都有不同程度的毒杀效果。 “7216”杀虫菌对菜青虫、小菜蛾、稻苞虫、稻纵卷叶虫的杀虫效果高于目前常用的化学农药。同时,无残毒不污染环境,能保护害虫天敌,使用安全对人畜无害,在蔬菜上使用尤其有重要的意义。1978年夏秋之交,由于久晴不雨,菜青虫,小菜蛾大量发生,我场1,800亩萝卜、甘兰等蔬菜的叶片被害程度达到了4～5级,有的队甚至不得不重新播种和栽植。由于单纯长期使用化学农药,许多害虫产生了不同程度的抗药性,使用农药的稀释倍数达到或超过了禁用的界限,但仍控制不住虫害的发展。在这种情况下,我们从修水县菌肥厂引进和生产了“7216”杀虫菌菌种。
“7216” is a highly efficient bacterial microbial pesticide, which is a new type of insecticide for controlling pests in agriculture and forestry. Lepidoptera, Hymenoptera a variety of pests have different degrees of poisoning effect. The insecticidal effect of “7216” insecticide on Pieris rapae, Plutella xylostella, rice sheath insects and rice leaf roller worms was higher than that of the commonly used chemical pesticides. In the meantime, it is of great significance to use vegetables in a safe manner without harm to the environment and to protect natural enemies of pests. At the turn of summer and autumn of 1978, due to a long absence of rain, Pieris rapae and Plutella xylostella occurred in large numbers. The 1,800 acres of radish, kalanchu and other vegetables in our farm reached the levels of 4 to 5, and some teams even had to replant and plant . Due to the simple and long-term use of chemical pesticides, many pests have different levels of resistance. The dilution ratio of pesticides used reaches or exceeds the prohibited limits, but still can not control the development of pests. In this case, we introduced and produced “7216” insecticidal species from Xiu-Shui Fertilizer Plant.