Shed strawberry soil fertilizer management
I. Soil management As the cultivation of strawberries in protected areas is planted on high ridges to keep the soil loose, and generally no cultivators are needed, the main content of soil management is mulching. Strawberry covered with plastic film can improve the soil, save water, improve ground temperature and reduce humidity. The mulch film can be made of transparent film (increase in temperature) or black film (in control of weeds), which is conducive to plant growth and development and increase fruit yield. The period of mulching film should be determined according to the climate environment and cultivation requirements. If it is cold for winter, it is generally poured in frozen water before the soil is frozen, and covered when the surface is slightly dry after 3 to 5 days. Film thickness is generally 0.008 to 0.02 mm. When it is covered, it requires tightness, firmness and strict sealing. The seedlings can be covered together, and when the temperature in the protective field is suitable for sprouting, the seedlings can be broken and raised. Second, the scientific fertilization of strawberry fertilizer, the demand for fertilizer than other fruit trees, it must have a sufficient supply of nutrients, especially the supply of nitrogen, phosphorus, potassium, more important. 1. Base fertilizer. Schiff base should be applied before planting, and organic fertilizer should be applied. Due to the high planting density of strawberries, it is inconvenient to grow fertilizers in the growing season. Therefore, the base fertilizer should be applied at least once. The application amount is generally not less than 2,000 kg of chicken manure or 5000 kg of high quality manure per acre, and suitable amounts of phosphorus and potassium fertilizers can be added. The organic fertilizer should be applied after it has been cooked, and it should be fully mashed and spread evenly. 2. Top dressing. Topdressing can timely supplement the nutrients needed by strawberries, but to master the principles of appropriate nitrogen application and increased P and K, the number and frequency of fertilizers will depend on the soil fertility and the status of plant growth and development. Usually from the shed to the bud, it can be applied once every 10 days. Fertilizer is mainly composed of potassium sulfate compound fertilizer with a dosage of 20 kg per mu. 3. Top dressing. The top dressing can increase the photosynthetic intensity of leaves, increase the respiration of leaves and the activity of enzymes, promote root development, increase fruit yield, and improve fruit quality. Usually in the middle and late period of spraying, spraying 0.3% to 0.5% of urea, 0.3% to 0.5% of potassium dihydrogen phosphate, 0.1% to 0.3% of boric acid, 0.03% of manganese sulfate, 0.01% The iron platinic acid solution and the organic nutrient solution such as 883 High Yield Spirit and Phytonin promote the good development of fruits in the middle and later stages, increase fruit weight and sugar content, make the fruit taste more delicious, and the commodity price is higher. Extra-root topdressing can be carried out at budding stage, flowering stage, and flower bud differentiation stage. Third, rational watering in the greenhouse due to the cover film and film cover, the film can be seen everywhere under the film and the film everywhere, the soil surface is also very moist, which gives an illusion of water shortage, but at this time in the event of flowering , combined with top dressing should be poured once permeable. From the production practice, whether or not the plants lack water is not entirely dependent on whether the soil is moist or not. An important sign depends on whether or not water is spit on the leaves of indoor plants in the morning. In general, even if the soil is moist, plants that do not spit water should be considered water scarce. This phenomenon was evident in the morning and disappeared after 10 o'clock as the room temperature increased. About 1 week of flowering to stop watering, after flowering combined with fertilizer watering. During the fruit enlargement period, special attention should be paid to irrigation, water should be required during nursery and after planting, and water should be fed in an appropriate amount in time. In early spring, as long as the drought can not be appropriate late irrigation, and the amount of irrigation should not be too large, so as not to reduce the temperature, affecting root growth. Before wintering, water should be properly controlled to prevent the plants from greed green growth and adverse wintering. The frozen water should be filled once before the soil is frozen to facilitate the safe wintering of strawberries and promote the growth of early spring in the second year. Leaf Class,Ginkgo Biloba,Eucommia Leaf,Types Of Leaves Class Henan Qiancuntang medicial technology co.ltd. , https://www.qctchineseherb.com