First, the principle of fertilization.
The principle of fertilization is to provide nutrients for crops on the basis of the fertilizing soil and the role of soil microorganisms. Organic manure is mainly used, supplemented with biological fertilizers, and green manure crops are appropriately planted to cultivate soil.
Second, fertilization
1, farmyard fertilizers, such as compost, manure, methane fertilizer, green manure, crop straw, mud, cake fat and so on.
2. Biological bacterial fertilizers, including humic acid fertilizers, rhizobia fertilizers, phosphorus bacteria fertilizers, compound microbial fertilizers, etc.
3, green fertilizer crops, such as turfgrass, purple Yunying, Sesbania, castor, alfalfa and so on.
4, organic compound fertilizer, such as Yililai active (biological) organic fertilizer, green sun liquid fertilizer, billion An Shenli and so on.
5. Waste generated from other organic production, such as bone meal, amino acid residues, livestock processing waste, sugar factory waste, etc.
Third, pay attention to the problem
1. Human fecal urine and manure should be thoroughly fermented and decomposed. It is best to retort through biological bacteria and rinse with water after dressing. In addition, human urine has high nitrogen content and should not be used excessively in crops such as potato, melon and beet.
2. Straw fertilizers tend to cause soil oxygen deficiency during mineralization and produce phytotoxins. It is required that the soil be turned into the soil before crop sowing or transplanting.
3, organic compound fertilizer is generally a long-acting fertilizer, in the application, it is best to apply farmyard fertilizer to improve fertilizer efficiency.
Fourth, the application method
1. Basal fertilizer: Combine 3000-5000 kg of manure or bio-compost that is prepared with per acre. If possible, use organic compound fertilizer as a seed fertilizer. For example, use Yili to active 100 kg of organic fertilizer and “Fengyi†brand. Organic compound fertilizer 60-70 kg. The method is to apply a ditch or a hole under the seed or seedling before transplanting or sowing, and the fertilizing depth is preferably 5-10 cm. Note the medium spacing.
2. Top-dressing: topdressing soil fertilization and foliar application. Soil topdressing is mainly used in combination with watering and earth-cultivation during the vigorous growth period of vegetables, mainly human urine and bio-ply fertilizer. Foliar fertilization can be selected in the seedling stage, the growth period of bio-organic fertilizer, such as deli 500 times, 100 million Ethanol 500 times spray, spray every 7-10 days, and even spray 2-3 times.
Green manure is generally overturned during the flowering period, the depth of overturning is 10-20 cm, and the pressure is 1000-1500 kg per mu. The turning time can be determined according to the decomposition rate of green manure.
In addition, fertilization should be based on the characteristics of fertilizers and different soil properties, different types of vegetables and different growth and development period of flexible collocation and scientific application, in order to effectively fertilize the soil and increase crop yield and quality. (to Lu)
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