Bottom fertilizer and topdressing so that using vegetables to change crops does not "injure"

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Bottom fertilizer 1, decomposed manure In the winter vegetable replacement crops, the use of bottom fertilizer is more problematic, especially the problem of undecomposed manure is more prominent. It is necessary to do a good job of decomposing manure. If the manure can not be cooked, it is recommended that the vegetable farmers choose the commercial organic fertilizer that has been fermented. It can use 2 to 3 tons of fermented sheep manure and 0.5 to 1 ton of fermented soybean meal to ensure safety first, and the fertilizer effect is more durable.

2. When high-organic and low-nutrient organic fertilizers are used for winter vegetables, in order to improve soil permeability and soil activity, priority should be given to manure types rich in organic matter and low in nitrogen, such as fermented sheep dung, Cattle manure and other animal manures are used to cover the ground with rice husks and broken straw.

Topdressing 1. Careful use of rooting agents for two types of functional fertilizers is a hot product on the market in recent years, but for normal growing vegetables, long-term use of such rooting agents has the potential to cause a lot of damage, which will lead to hormone disorders in plants and nutritional distribution. , Growth and development are affected.

In addition, fish protein, amino acids, etc. cannot be used when root diseases occur. Fertilizers such as fish protein and amino acids have high nutrient content and easy absorption. While promoting root growth, they can also be used as good nutrition for pathogenic bacteria to promote their growth. When vegetable roots are injured and root diseases occur, this type of nutrient fertilizer is not suitable for use. The emphasis should be on promoting root use during the fruiting period.

2. Pay attention to the safety of fertilizer selection and promote root growth. The root system at the seedling stage is the basis for later growth and development. Pay attention to fertilizer selection to ensure safety, efficiency, and durability. After slowing down the seedlings, it is recommended that vegetable farmers give priority to the selection of biological agents, alginic acid, calcium fertilizer, etc., and use them together to improve soil activity and promote root growth.

Remind vegetable farmers to pay attention to choosing regular products. If you don't know how to choose, you can also choose a microbial inoculum with pesticide certificate number, such as too resistant to Bacillus subtilis, Trichoderma harzianum, Bacillus cereus, etc., 0.5 to 1 kg per acre, once or twice a month, washed with water Shi. After seedlings are planted, proper calcium fertilizer supplementation at this time can promote root development, cultivate robust plants, and promote flower bud differentiation.

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