论文部分内容阅读
蔬菜无公害生产是消费者的需求。对于一次性收获的蔬菜如:芹菜、甘蓝、大白菜、油菜等,可根据农药的安全间隔期,在收获前相隔一定的时间停止用药,以起到无公害蔬菜生产的目的。但对于多次收获的茄果、瓜类蔬菜,则很难做到在收获前规定出一定的时间停止用药,特别是如采收期内发生病虫害,果实很有可能未出农药残留期就采收上市。据说在番茄和黄瓜栽培.中采用果实套袋方
Vegetable pollution-free production is the consumer’s demand. For one-time harvest of vegetables such as: celery, cabbage, cabbage, rape and so on, according to the safety interval of pesticides, at a time before harvest to stop medication, in order to play a pollution-free vegetable production purposes. However, for many harvests of eggplant, melons vegetables, it is difficult to achieve a predetermined time before harvest to stop the medication, especially if the occurrence of pests and diseases during the harvest, the fruit is likely not to pesticide residues on the mining Close the market. It is said that in the cultivation of tomatoes and cucumbers with fruit bagging side