Fertilization principle The planting seasons of cucumbers in facilities are divided into autumn and winter pods, wintering pods and winter pods. For the excessive fertilization in their production, the fertilization proportion is unreasonable. Excessive irrigation results in serious loss of nutrients, and the organic manure used is mainly livestock manure. As a result of imbalances in nutrient ratios and reductions in soil biological activity, continuous cropping obstacles and other problems have led to serious degradation of soil quality, reduced nutrient absorption efficiency, and decreased quality of vegetables, the following fertilization principles have been proposed: (1) Reasonably apply organic fertilizers, promote the use of high-quality organic compost, pay attention to the application of high-carbon-nitrogen ratio to exogenous straw or organic fertilizer, and less use of poultry manure; (2) Based on the soil fertility conditions and the application amount of organic fertilizers, comprehensively consider the supply of soil nutrients, and appropriately adjust the amount of NPK fertilizer; (3) adopt reasonable irrigation and fertilization techniques and follow a small number of irrigation fertilization principles; (4) Nitrogen fertilizer and potash fertilizer are mainly used as top dressings, and are applied in small amount for several times to avoid top-dressing compound fertilizers with high phosphorus content. (5) When the acidity of vegetable fields is severe, lime soil and other acidic soil conditioners should be applied. 2. Fertilization recommendations (1) Fertilizer fertilizer is applied to decompose organic fertilizer and supplement phosphate fertilizer. Apply 60 to 100 kg of organic fertilizer per 10 square meters of seedbed, 0.5 to 1 kg of calcium, magnesium and phosphate fertilizer, 0.5 kg of potassium sulfate, and spray 0.05% according to seedling conditions. ~0.1% urea solution 1~2 times; (2) Basal fertilizer application of high quality organic fertilizer 4 square / mu; (3) The production level is 14000~16000 kg/mu, nitrogen fertilizer (N) is 40~45 kg/mu, phosphorus fertilizer (P2O5) is 13~18 kg/mu, and potassium fertilizer (K2O) is 50~55 kg/mu; (4) The output level is 11,000~14000 kg/mu, nitrogen fertilizer (N) is 35~40 kg/mu, phosphorus fertilizer (P2O5) is 11~13 kg/mu, and potassium fertilizer (K2O) is 40~50 kg/mu; (5) The output level is 7000~11000 kg/mu, nitrogen fertilizer (N) is 28~35 kg/mu, phosphorus fertilizer (P2O5) is 8~11 kg/mu, and potassium fertilizer (K2O) is 30~40 kg/mu; (6) Production levels are 4000-7000 kg/mu, nitrogen (N) is 20-28 kg/mu, phosphorus (P2O5) is 5-8 kg/mu, and potash (K2O) is 25-30 kg/mu. If drip fertilization techniques are used, the amount of chemical fertilizers can be reduced by 20%. If the floodwaters are flooded, the amount of fertilizers needs to be increased by 20% each time. All organic fertilizers and phosphorus fertilizers were used as basic fertilizers in the facilities. The primary flowering stage was dominated. All the nitrogen and potassium fertilizers were regularly divided into 6 to 8 top dressings according to the nutrient requirements during the growth period; the topdressing nitrogen fertilizer amount did not exceed 5 kg/mu; The nitrogen-potassium fertilizers in autumn and winter and winter-spring pods were divided into 6 to 7 top dressings, and the NPK fertilizers in wintering pods were top-dressed 8 to 11 times. If drip irrigation fertilization technology is adopted, a small number of times can be adopted. The number of times of fertigation is about 15 times. Food Ingredient Fructo-Oligosaccharide,Organic Oligofructose GOS,Digestion Resistant Fiber Shandong Bailong Chuangyuan Bio-tech Co.,Ltd. Qingdao Branch , https://www.qdblcycn.com
Facility cucumber science fertilization guidance
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