When storing pests for chemical control, it is necessary to use the medicine scientifically and prescribe the right medicine. China Pesticide Network Xiaobian for your specific introduction:
1. Insect-resistant phosphorus: Insect-resistant phosphorus is the main pesticide used in rural areas to control stored grain pests. It is a highly effective, low toxicity, low residual pesticide. The insect-resistant phosphorus drug has long effect and is effective for controlling corn grain elephants, saw grain thieves, long-horned flat snails, wheat moths and other stored grain pests. Insect-resistant phosphorus is a high-purity malathion for mixing food. Note that the mixing should be uniform. It is best to mix the food before entering the warehouse on the drying field. A spray method can be used to evenly spray the 20 ppm insecticidal phosphorus solution on the grain. The grain moisture should be within the safe water standard, ie the water content is below 13%. It is forbidden to mix insect-resistant phosphorus and dichlorvos, otherwise it will produce poisoning effect.
There should be a four-month safety interval after spraying the pesticide before it can be processed.
2. Grain-saving phosphorus: Grain-protecting phosphorus is a grain protection agent developed by the Chengdu Grain Storage Science Research Institute of the State Grain Administration. It has good control effect on stored grain pests, especially suitable for rural grain storage. The ratio of the amount of grain-protected phosphorus to the original grain is 1:2500. That is, 100 grams of bagged grain of phosphorus can be mixed with 250 kg of raw grain.
When using grain-preserving phosphorus, the grain must be dry (in compliance with safe moisture standards). And the grain is free of insects or basically free of insects.
3. Insecticide Phosphorus Phosphorus Phosphorus is the internationally preferred grain protection agent. Its chemical name is methyl pyrimidine (sulfur) phosphorus, and the commonly used dosage for controlling stored grain pests is generally 5ppm.
4. Cereal net (cereal protectant)
The worm is a compound botanical insecticide with 4-6 kinds of Chinese herbal medicines as the main raw material and a small amount of chemical agent mixed. It has strong repellent, repellent and contact effects on pests. It has the aromatic scent of Chinese herbal medicine. The insecticidal effect is remarkable. The ratio of the net dose of worms to the original grain is 1:2500, that is, the bagged powder of 200 grams per bag can be mixed with the original grain of 400-500 kg.
5. Aluminum phosphide (fumigant)
The commonly used food for farmers is aluminum phosphide tablets, about 3 grams per piece. The dosage is generally calculated as 1-2 tablets (3-6 grams) per cubic meter. Usually 5 tablets per ton (1000 kg) of grain. When applying the medicine, put the tablets into a small cloth bag (one piece per bag). The cloth bag is tightly tied with the rope and evenly buried in the grain pile to let the phosphine release slowly. Seal immediately after application (pay special attention to the seal around the bottom). To ensure the effect. After fumigation for 5-6 days, it should be ventilated for 3-5 days, and take out the bag, choose to stay away from the water source, and dig deep in the soil.
Tips for the pesticide network : The above medicines are only used as raw grain and seed storage, and the finished flour and rice are not used.
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