The amount of fertilizer used in the new shed is large to supplement the soil organic matter, improve soil permeability, and improve the production performance of the raw land. After the winter, the temperature is low, the new shed has fewer microorganisms, and the manure fermentation is slow. It is not recommended to use a large amount of unripe organic fertilizers such as rice husk manure, dried chicken manure, straw, etc., especially in places that are still not ready for planting after the winter. , As the ground temperature decreases, manure fermentation is slow, and more attention should be paid to the ratio of base fertilizer, which should be mainly decomposed manure or bio-organic fertilizer. Among the base fertilizers, manure occupies a dominant position. It is recommended to choose fermented chicken manure. It is appropriate to use 3000~5000 kg per mu, with 50~100 kg of high-potassium compound fertilizer.
The soil has less pathogenic bacteria and beneficial microorganisms. Vegetable farmers should be combined with biological bacterial fertilizer during fertilization and used together with fermented chicken manure to increase the number of beneficial bacteria, activate the soil, and improve soil fertility. At present, there are a large number of biological bacterial fertilizers on the market, and biological bacterial fertilizers with guaranteed quality should be selected for one-time use to prevent diseases and promote roots. After fertilization, pay attention to deep plowing and watering immediately, level the land in the shed, and prepare for planting. Do a good job of protection, the advantages "bright up"
After the new shed is built, vegetable farmers should pay special attention to cutting off the introduction channel of root diseases and insect pests to avoid root diseases and insect pests.
Farm machinery and tools should be disinfected properly. Farm machinery is an important channel for the transmission of root diseases and insect pests, especially root-knot nematodes, which are mainly spread through agricultural machinery. Before turning agricultural machinery and tools, vegetable farmers should clean up the remaining soil on agricultural machinery and spray tires, rotary tiller blades and other parts with abamectin 1000 times, carbendazim 500 times, etc., to protect and avoid agricultural machinery. Pathogens, eggs, etc. that may be carried.
Prepare special tools for shed management. Special shoes should be prepared in the shed, which should be replaced before entering the shed; the hoes, scissors, etc. used in the shed should be exclusively used. Special tools can avoid the mutual transmission of pathogenic bacteria and reduce the probability of diseases entering the shed.
Pay attention to the diseased body to treat the vegetable stubble after changing the stubble, and transport it to a place far away from the shed for processing, especially the root system, diseased leaves, etc., to avoid pathogenic bacteria still congregating and spreading around the shed.
Through the above simple preventive measures, the probability of plant diseases and insect pests, especially root plant diseases and pests being introduced into the shed can be greatly reduced, the normal use time of vegetable sheds can be prolonged, and the pesticide input after disease occurrence can be reduced.
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