Applicability of insecticides in sustainable management of rice pests
Based on the comprehensive analysis of toxicity, drug resistance and effects on beneficial organisms, the applicability of insecticides in sustainable management of rice pests can be divided into five categories. The first category is applicable insecticides, which are fipronil, chlorpyrifos and imidacloprid, respectively; the second category is suitable for mixed use, mainly avermectin, Bt preparation and acephate; the third category is insecticides with declining applicability, including sand silkworm toxins, triazophos, imidacloprid, carbamates and thiazinones; the fourth category is inapplicable pesticides, which are highly toxic pesticides and pyrethroid pesticides, respectively. The fifth category is the insecticides expected to be introduced into rice fields, including fenbufenozide and flurosemide. In the process of rice pest control, pesticides should be selected to ensure the sustainable management of rice pests.
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Pay attention to "six taboos" in the use of bacterial biological pesticides
Biological pesticide: BT, the Chinese name is Bacillus thuringiensis, is a bacterial insecticide. This variety has been fully used in the main vegetable areas of our country and achieved good economic benefits. But at present, there are many BT manufacturers with different quality, so we must choose the variety with good quality when using it. Note: BT is aged at a slightly higher temperature.
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Six taboos on the use of bacterial biological insecticides
Edible fungi occur insect pests due to the special smell of hyphae during the period of fungus and mushroom emergence, so insecticides are often used when insect pests occur. When there are insect pests in edible fungi, we should first choose insecticides with high efficiency, low toxicity and short residual period, such as enemy killing, dichlorvos, etc., and do not use BHC and DDT prohibited by the state.
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