条件筛选
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Why do insecticides become less and less effective the more you use them?
Chlorpyrifos is a highly effective, broad-spectrum organophosphorus insecticide that acts on pests through contact toxicity, stomach toxicity and fumigation, and is especially effective against the brown planthopper. The relevant application techniques are described below: 1. Product characteristics: 1. Chlorpyrifos is currently available in China in formulations such as emulsifiable concentrate, granules and microemulsion. Among them...
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This winter break, play less Honor of Kings and PUBG, and quietly be a handsome guy or a pretty girl
This year, more than 50% of domestic universities have holidays exceeding 35 days. With the Spring Festival approaching, those of you who have already been on winter break for nearly half a month - are you playing games until your hands cramp...