Spring tube double rape needs five defenses

Waterlogging prevention: After the spring begins, the rainwater gradually increases. Drainage and anti-staining are the top priorities of the rapeseed spring tube. Therefore, after the spring must clean up the "three ditch" (main ditch, Weigou, Xianggou) to rule out the accumulation of water in the field to eliminate waterlogging. Prevention of pests and diseases: The main diseases and pests of rape after spring have sclerotia, viral diseases, frost and tsutsugamushi diseases, especially sclerotiorum is more common and seriously harmful. Its disease prevention and control methods: First, deepen the "three ditch" to reduce the groundwater level; Second, remove the old leaves of the lower part, improve the ventilation and light transmission conditions; Third, in the early stage of disease, 200 grams per mus of morbidity, add 60 kilograms of water, or With 50% carbendazim 150 grams, add 50 kg of water for spray control. The locust was found to be infested and sprayed with 40% dimethoate 800 to 1000 times. Anti-lodging: Steady application of fertilizer is the key to preventing the lodging of rape. If the leaves of plants are small and fine, they should use 1 kg of bio-fertilizers for mussels when they are convulsed, soaked for 3 to 5 hours and pick up foals for water and manure. However, you must not apply excessive amounts of fertilizer to prevent it from causing lodging. Anti-premature decay: After the spring rape growth, the lack of manure, flower color before the obvious yellow, there is a lack of fertilizer dehydration, premature aging phenomenon of the field, in the beginning of the flowering period with mucidae 1 kg of biological fertilizer, soaking 3 ~ After 5 hours, 50 litters were mixed with water and manure to prevent premature aging of defertilizer. Air rafts: The proportion of rapeseeds with premature aging and overgrown vegetative growth is high. Therefore, during the bud stage and early flowering stage of rapeseed, 100 grams of borax per acre (first dissolved with a small amount of hot water) and 50 kg of water were sprayed once to prevent and control flowering and not to increase the seed setting rate and robustness. The role of strong grain.

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