Linyi Fertilizer Network Copyright
1 Fertilization principle According to the law of nutrient absorption and utilization of crop growth and development, organic fertilizer is applied again, nitrogen, phosphorus, potassium and other fertilizers are matched, and appropriate fertilizer and micro-fertilizer are applied. If conditions permit, the formula and fertilization can be adopted according to the demand for the mineral elements and the proportion of the vegetables, and the yield is determined by the yield. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
2 Fertilization method 2.1 The base fertilizer should be in one step, and the organic fertilizer and chemical fertilizer should be combined. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
2.1.1 Organic fertilizer Generally, the organic matter of 0-30cm soil layer should reach 4%, the cucumber should be up to 6%, and the organic fertilizer should be 14m3 per 667m2. Chicken manure is the best. The method of decomposing is to mix the organic fertilizer with water and wet with 1kg of phoxim in the first 2 months after the organic fertilizer is applied into the shed, and the mixture is sealed and fermented with plastic film for 15-20 days (more than 20 days of fertility reduction), in the colonization Apply to the greenhouse in the first 15 days, and apply 50% carbendazim WP (do not use suspending agent) 1.5kg, phoxim 1.5kg, carbofuran 3kg, deep turn 30-40cm per 667m2. This not only does not produce harmful gases such as ammonia and nitrogen dioxide, but also does not contain pathogens in the organic fertilizer, reducing the occurrence of vegetable pests and diseases. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
2.1.2 Chemical fertilizers generally apply 150kg of nitrogen, phosphorus and potassium ternary compound fertilizer per 667m2, 200kg of superphosphate, 10-15kg of K2SO4 or KC1, 3-5kg of zinc and magnesium fertilizer, 180kg of bean cake, and potassium for fruit vegetables. The amount of calcium applied. When applying chemical fertilizers, be careful not to apply volatile chemical fertilizers such as ammonia water, ammonium bicarbonate or ammonium nitrate. When urea, ammonium phosphate and other non-volatile chemical fertilizers are used as base fertilizer, they should be mixed with superphosphate and then buried deep. Diammonium is not suitable as a base fertilizer and can be applied as a top dressing. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
2.2 Topdressing in the middle and late stages of crop growth (melon and fruit in the fruiting period) can be applied topdressing, generally chasing 3-5 times a total of 30-35kg/667m2 topdressing should be regarded as the growth of the long-term blade large and black can be chased K2SO4 7.5-10kg /667m2, leaf yellow, small, can add urea 10-15kg/667m2, with urea, K2SO4 as top dressing, to apply small force, with watering. Do not chase or rush the unfertilized manure in the shed. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
2.3 Leaf fertilizer is mainly boron, molybdenum, zinc, copper, calcium and other trace element fertilizers, mainly applied in the middle and late stages of crop growth. When applying, pay attention to less application, reasonable formula, such as phosphorus + boron + calcium, but phosphorus can not Zinc and potassium cannot be mixed with magnesium. Generally, 0.3kg of urea + 0.2kg KH2PO4 is sprayed on 25kg of water per 667m2, that is, the economy has a high yield increase. The new type of leaf fat beans use "Gam" and the cucumber uses "Linong". The test shows that the cucumber is sprayed from the vine to the end of the period, 40% of the peasant 800 times 3-4 times, and the yield per 667m2 is increased by more than 40%, and can be alleviated. Disease. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
2.4 Carbon dioxide gas fertilizer Greenhouse greenhouse vegetable production, the greenhouse is basically in a closed condition, the CO2 content in the shed is low, especially at 9-12 hours, it can be reduced to below 50mg/kg, so photosynthesis is inhibited, so it is very important to increase CO2. Tests have shown that cucumber application of CO2 can increase yield by more than 35%. It is better to apply CO 2 in the early growth stage of the leafy vegetables, and the melon and fruit should be applied from the initial flowering stage. Generally, the CO2 topdressing is carried out at 9-11 am on a sunny day. CO2 can be produced by means of ammonium bicarbonate + sulfuric acid, baking soda + sulfuric acid, etc., so that the CO2 content in the shed reaches 1000 mg/kg. Do not ventilate when applying CO2. After 1.5-2 hours of application, Proper ventilation. If CO2 solid particulate gas fertilizer is applied, 40kg per 667m2 can be directly applied or buried on the surface, and the effective period can reach more than 45 days. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
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