Technical opinions on the application of commercial organic fertilizer (eggplant fruits)

Eggplant fruit vegetables include tomato, eggplant, pepper and other vegetables with harvested fruits as products, which are temperature-loving and fertilizer-tolerant vegetables. According to the growth stage, the methods of base fertilizer application, strip ditch application, transplanting fertilizer hole application, dipping root application and so on are generally adopted. The application amount of commercial organic fertilizer should be determined scientifically according to the needs of different vegetables and soil nutrient status in order to achieve the purpose of increasing production and income. 1. The method and dosage of applying commercial organic fertilizer to tomato. Tomato root group is more developed and needs a large amount of fertilizer, so we should choose loam soil with fertile soil, water conservation and fertility conservation. Before ploughing, the basic application was 200kg / mu of commercial organic fertilizer, 40kg / mu of calcium superphosphate and 15kg of potassium sulfate. The growth period of early-maturing varieties is short, so they can concentrate on topdressing once after setting fruit in the first inflorescence, applying commercial organic fertilizer 40kg to 50kg per mu, generally opening shallow trenches between the rows of plants, and then adding soil mulching, while middle and late-maturing varieties apply 40kg of commercial organic fertilizer per mu in the first panicle fruit expansion period, combined with topdressing and watering once. After the fruiting stage of the 2nd, 3rd and 4th layers, the urea was topdressing 8-10 kg per mu in turn, and then watered after fertilization. In the afternoon of sunny days, 0.4% potassium dihydrogen phosphate was sprayed on the leaves. 2. The method and dosage of applying commercial organic fertilizer to eggplant. Eggplant is a fertilizer-loving crop. Soil condition and fertilization level have great influence on the fruit setting rate of eggplant. There are less fallen flowers when the nutritional conditions are better. Malnutrition will increase the number of short style flowers, flower organ dysplasia, not suitable for fruit setting. Before transplanting, 200 kg of commercial organic fertilizer per mu, 25 kg of superphosphate and 15 kg of potassium sulfate were applied, sprinkled with soil surface and raked evenly into the ploughed soil. When the door eggplant reached the staring period, the fruit began to grow rapidly, the first topdressing was carried out, and the commercial organic fertilizer was 20: 30kg per mu. The second topdressing was carried out when the eggplant fruit was enlarged. When Simandou began to develop, it was the peak of eggplant fertilizer, and topdressing was carried out for the third time. The amount of topdressing is the same in these three times, and the amount of topdressing can be halved in the future. 3. The method and dosage of applying commercial organic fertilizer to hot pepper. In each period of growth and development of hot pepper, it is necessary to apply different kinds and quantities of fertilizer according to its nutrient requirements, and scientific topdressing should be carried out. To achieve one control, two promotion, three guarantees, four taboos. First, control fertilization at flowering stage to avoid falling flowers, leaves and fruits; second, promote timely topdressing in young fruit and harvest period to promote rapid expansion of young fruit; three guarantees: do not take off fat, do not grow too much, and do not suffer from fertilizer damage; four taboos: avoid using high concentration fertilizer, avoid wet soil topdressing, avoid high temperature topdressing, avoid over-concentrated topdressing. The function of base fertilizer is to accelerate the growth of seedlings, seal ridges in advance and seize the high yield of pepper. Before ploughing, 200,400 kg of commercial organic fertilizer and 10 kg of potassium sulfate were applied per mu or furrow. After entering the young fruit stage, the first topdressing can be carried out, with 1500 kg of rotten manure water per mu. During the harvest period, it is better to apply 700 kg of rotten manure per mu every 5-6 days in sunny days, watering and fertilizing. In the process of applying commercial organic fertilizer, it should also be noted that it can not be mixed with ammonium nitrate and other chemical fertilizers containing nitrate nitrogen, alkaline fertilizers such as ammonium bicarbonate, and physiological alkaline fertilizers such as sodium nitrate. Otherwise, it will cause the loss of nitrogen volatilization and affect the use effect of commercial organic fertilizer and chemical fertilizer. Through the use of commercial organic fertilizer, we can effectively improve the nutritional quality of vegetables, activate soil nutrients, improve soil fertility, enhance soil water and fertilizer conservation capacity, and promote vegetable growth.