Strawberry fertilizer, in the process of growth requires nitrogen, phosphorus and potassium and boron, magnesium, zinc, iron, calcium and other trace elements, different growth period strawberry needs different fertilizer characteristics, early growth needs of phosphorus, a large number of nitrogen in the early and mid-term, the entire growth Potassium is needed. The main fertilization techniques are:
Base fertilizer: The base fertilizer should be applied before planting, and organic fertilizer should be applied. Due to the high planting density of strawberries, it is inconvenient to supplement the fertilizer during the growing season. Therefore, the base fertilizer should be applied at one time. Generally, 5000 kg of high-quality farmyard manure is applied in Mushi, and appropriate 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.
Top dressing: topdressing can timely supplement the nutrients needed by strawberry, but to master the principle of appropriate nitrogen application and increase of phosphorus and potassium, the number and frequency of fertilizers will depend on the soil fertility and plant growth and development status. During the flowering period, fertilizer is generally applied to 9-10 kilograms of urea and 4-6 kilograms of potassium sulfate. During the period of berry enlargement, fertilizer is generally applied to 11-13 kilograms of urea and 7-8 kilograms of potassium sulfate.
Fertilizers outside the root: Spraying 0.3% urea or 0.3% potassium dihydrogen phosphate 3-4 times or 0.3% borax before and after flowering can increase fruit setting rate, improve fruit quality, and increase fruit weight. At the beginning of flowering and flowering, spraying 0.2% calcium sulfate plus 0.05% manganese sulfate (volume 1:1) can increase the yield and fruit storage performance.
Ductile Iron Sand Castings,Sand Casting,Malleable Cast Iron Sand Casting Product,Cast Iron Sand Casting
Hebei Chunfeng International Trade Co., Ltd , https://www.cfcastiron.com