Vegetable experts remind farmers to pay attention to the following three problems in the management of greenhouse vegetables:
Do not fertilize excessively. Because of the high temperature and humidity in the greenhouse, the decomposition of organic fertilizer is fast, the amount of nitrogen volatilization is large, and excessive fertilization is easy to cause fertilizer damage. Therefore, for greenhouses that have been continuously planted for more than 3 years, the application amount of chicken manure and cow dung should be controlled within 2,500 kg per mu, and the application amount of chemical fertilizer should be reduced by about 50%, and boron, zinc, magnesium, etc. should be added. Micro-fertilizer to balance the nutrients in the soil.
Don't overheat some vegetables. Some farmers mistakenly believe that when the temperature is high, the vegetables grow faster. In fact, the upper limit of the temperature of vegetables is 25 ° C ~ 32 ° C. If the temperature is too high, the growth of young fruit will be inhibited, and the vegetative growth and reproductive development of the plant will also be out of balance. The yield will not increase but decrease, and some varieties will only have long vines and no long fruit.
Do not leave the seedlings too dense. According to the measurement, when 1 tomato is planted in 1 square meter, 50% of the photosynthetic products will be consumed by the vegetative body, and another 50% of the photosynthetic products are used for fruit growth. If 4 plants per square meter are planted, the vegetative body will consume 70% to 80% of the photosynthetic product. Therefore, dense planting results in a decrease in yield and is prone to various bacterial diseases.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
radiopaque adhesive tape,Radiopaque Tape,Medical Tape
Anesthesia Medical Co., Ltd. , https://www.medicaldiverse.com