Rational use of pesticides to prevent damage to crops

Crops are subject to phytotoxicity, mainly chemical herbicides, different herbicides, concentration and interval, etc., have different degrees of impact on crops, and the degree of damage is also different, light production is reduced by 20% - 30%, and weight is 50 %-60%, more serious and even production, therefore, the rational use of pesticides.

The chloroquine acid herbicide has an accumulating effect in the soil, which may cause residual accumulation of phytotoxicity in the post-production. The soybean should be avoided within 8 months after the administration, and the beet, tobacco, etc. cannot be planted in the next year, and it takes more than 2 years to grow. In the test, within 300 days of using the drug, no crops can be planted except rice. In 12 months, umbrella-shaped crops such as eggplant, carrot, celery, coriander, etc. cannot be planted, and the above-mentioned paddy field water of quinclorac should not be used to irrigate the above. crop.

Puschte is a long-acting herbicide with 70 grams of active ingredient per hectare. It can grow wheat, peas and alfalfa in 4 months after application, and can grow barley and tobacco in 9 months. It can grow corn after 18 months. Sorghum, potato, can be grown after 40 months, even for 10 years Puschte, it is not easy to grow soybeans.

Soybean sulfonate has a long duration in the soil, and can not grow beets, rice, potatoes, melons and vegetables. It usually takes 3 years to grow sorghum, and vegetables and beets are planted every 5 years.

In short, the plots of Puschte and Beansulfuron can only be used to grow soybeans and wheat in the second year, and can not grow cabbage, rape, potato, cucumber, eggplant, pepper, coriander, beet, watermelon, sorghum and other crops within 3 years.

Acetochlor can cause soy phytotoxicity, and 2,4-D butyl ester can cause corn seedlings. Due to the close relationship between crops and weeds, the dosage is too large, and it is easy to damage the crops or the crops. The large amount of pesticide residues can cause phytotoxicity to crops.

At least the amount of Atralu is more than 130 grams. In the second year, rice, soybeans, wheat, sugar beets, vegetables, etc. cannot be grown. If the dosage is more than 4 kilograms per hectare, it will cause phytotoxicity to broad-leaved crops such as sorghum soybeans. is too big.

Guangxingling uses 560-1400 grams of active ingredient per hectare. It can grow rice, corn, pepper, tobacco and other crops 9 months after application. After 10 months, all crops can be planted, but the concentration is large, that is, 1 kg / ha, phytotoxicity to crops such as sorghum corn, so the application concentration should not be too large. The appropriate dosage of chlorhexidine is mixed with other drugs, and has no effect on sputum.

Broad-grass degraded slowly in acidic soils and degraded rapidly in alkaline soils. The plots after application of the drug could be used to grow beets, rapeseed and other crops after more than two years.

From: rural newspaper

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