One of the characteristics of cucumber in winter greenhouses is the large amount of nutrients absorbed. Therefore, the application of organic fertilizers and how to use chemical fertilizers become the key to high yields. Due to the large amount of cucumber fertilizer in greenhouses, if the soil is continuously planted for several years, nutrients in the soil will continue to accumulate. Therefore, different soils need to be fertilized according to local conditions. According to experts, greenhouses grown in the first year of cucumber can be topdressed with watering during the fruiting season of cucumber in winter. Generally, topdressing is performed once every three to four weeks. For fertilization varieties and quantities, it is guaranteed that urea will be applied in an amount of 3 to 5 kg per mu, 3 to 5 kg of superphosphate, and 2 to 3 kg of potassium chloride. You can also apply Sanyuan Compound Fertilizer, applying 12 to 15 kg per mu and applying 3 kg of urea. During the fertilization process, it should be noted that the longer the planting period, the more nutrients are accumulated in the soil, and the most abundant nutrient element is phosphorus. However, the demand for phosphorus from cucumber is relatively small, and this element is not easily lost in soil. Therefore, the soil containing more than three years of phosphorus in cucumber is rich in phosphorus, leading to unbalanced nutrients in the soil and affecting the yield of cucumber. . In this case, fertilization in cucumber greenhouses is mainly used to adjust the nutrient balance in the soil. If conditions are available, it is possible to implement soil testing and formula fertilization. Under normal conditions, the application of organic fertilizers is mainly to increase the comprehensive fertility of the soil, and appropriate application of nitrogen and potassium fertilizers, with little or no application of phosphate fertilizers. The results of cucumber flowering began to be combined with watering for topdressing, usually in the winter every 4 to 5 weeks, top dressing, the amount of fertilizer applied per acre was 5 to 10 kg of urea, superphosphate 2 to 3 kg, potassium chloride 1 to 2 kg. Or apply topdressing ternary fertilizer directly, applying 15 to 20 kilograms per acre and applying 2.5 kg of urea. Cleaner Products,Toilet Bowl Cleaner Liquid,Toilet Block Cleaner,Stain Remover Cleaning Wuxi Keni Daily Cosmetics Co.,Ltd , https://www.wxkenidaily.com
Winter greenhouse cucumber fertilization should be adapted to local conditions