How to fertilize the facility cucumber science

Problems in Fertilization and Fertilization Principles The planting season of cucumber is divided into autumn and winter crickets, wintering sorghum and winter sorghum. The organic fertilizers used in the production are blindly over-fertilized, the proportion of fertilization is unreasonable, excessive irrigation, and vegetable fields are applied. Mainly due to livestock and poultry manure, resulting in reduced soil biological activity, continuous cropping obstacles, serious deterioration of soil quality, decreased nutrient absorption efficiency, and decreased vegetable quality, the following fertilization principles are proposed: (1) Adding organic fertilizers and promoting the application of high-quality organic Composting, old vegetable sheds pay more attention to composting with more straw, less fertilized manure, organic and inorganic fertilizers and straw returning; (2) comprehensive consideration of environmental nutrient supply according to soil fertility conditions and application rate of organic fertilizer, appropriate Adjust the amount of nitrogen, phosphorus and potassium fertilizer; (3) Adopt reasonable irrigation techniques and follow the principle of a small number of multiple fertilization; (4) It is not suitable for frequent topdressing after seedling, and nitrogen and potassium fertilizers are applied in stages, a small number of times to avoid chasing Apply compound fertilizer with high phosphorus content, pay attention to topdressing in the middle and late stages; (5) Appropriate application of acid soil such as lime when vegetable acidification is serious
Fertilization amount and method (1) Seedling fertilizer: increase the application of decomposed organic fertilizer, supplement the application of phosphate fertilizer, apply 60~100 kg of decomposed organic fertilizer per 10 square centimeter seedbed, 0.5-1 kg of calcium magnesium phosphate fertilizer, 0.5 kg of potassium sulfate, according to the seedling condition Spray 0.05% to 0.1% urea solution 1 or 2 times. (2) Base fertilizer: Apply high-quality organic fertilizer 3~4 square meters/mu. (3) The production level is 14000-16000 kg/mu: nitrogen fertilizer (N) 45-50 kg/mu, phosphate fertilizer (P2O5) 20-25 kg/mu, potassium fertilizer (K2O) 40-45 kg/mu. (4) The production level is 11,000-14000 kg/mu: nitrogen fertilizer (N) 37-45 kg/mu, phosphate fertilizer (P2O5) 17-20 kg/mu, and potassium fertilizer (K2O) 35-40 kg/mu. (5) Production level 7000 ~ 11000 kg / mu: nitrogen fertilizer (N) 30 ~ 37 kg / mu, phosphate fertilizer (P2O5) 12 ~ 16 kg / mu, potash fertilizer (K2O) 30 ~ 35 kg / mu. (6) The production level is 4000-7000 kg/mu: nitrogen fertilizer (N) 20-28 kg/mu, phosphate fertilizer (P2O5) 8-11 kg/mu, and potassium fertilizer (K2O) 25-30 kg/mu. If drip fertigation is used, 20% of fertilizer can be reduced. If flooding is used, it is necessary to increase the amount of fertilizer by 10% to 20% per fertilization. The cucumbers in the facility are all applied with organic fertilizer and phosphate fertilizer as the base fertilizer. The initial flowering period is mainly controlled. All the nitrogen and potassium fertilizers are regularly applied according to the nutrient requirements of the growth period by 6 to 11 times; the amount of nitrogen fertilizer applied per time does not exceed 5 kg/mu. The nitrogen and potassium fertilizers of autumn and winter glutinous rice and winter spring glutinous rice are divided into 6 to 7 times of topdressing, and the nitrogen and potassium fertilizers of wintering long carp are divided into 10 to 11 times of topdressing.