First, top dressing outside the roots. The top dressing is not only suitable for the pre-growth stage, it is also necessary at the late growth stage. After fruit-picking, spraying 0.5%-0.67% urea solution plus 0.2%-0.33% potassium dihydrogen phosphate or 0.2% superphosphate on the back of leaves every 15 days can increase the photosynthetic capacity of leaves and increase shoot nutrition. Second, reuse basal fertilizer. The late-maturing varieties were harvested immediately after mid-to-late October. Fertilization mainly consists of farmyard fertilizers containing more organic matter, such as compost, manure, and manure. Combined with the application of phosphate fertilizer and potassium fertilizer, the application of base fertilizer can further accelerate the decomposition of organic matter and give full play to the fertilizer effect. The amount of fertilizer can be determined according to the soil conditions and the species, age, and tree vigor of the fruit tree, and it should normally account for 60% to 70% of the annual fertilization amount. Normally 25-30 kg of juvenile tree planting will be applied. ~70 kg. According to the age of the tree, apply some superphosphate and urea. The depth of fertilization is 30 to 60 cm, and young trees should be applied shallowly. Fertilizers must be mixed with soil to prevent root burning. Water should be promptly applied after fertilization in order to facilitate the decomposition of the fertilizer and the absorption of the root system. Third, deepen the tree plate. After the fruit is harvested, deep-turning tree trays with a depth of 40 to 50 cm are used to cut off some old roots to stimulate the formation of a large number of absorption roots, and to increase the ability of fruit tree roots to resist freezing during winter. At the same time, for many overwintering larvae and pupae have wintering habits concentrated in the soil within 10 cm of the canopy, deep plowing the tree plate after manual collection can eliminate a large number of pests. Fourth, irrigation before freezing. Watering and drought-resistance usually occurs when the late autumn shoots of fruit trees germinate. According to the test, watering once in 10 to 12 days before the first frost can raise the surface temperature above 2°C. V. Prevention of pests and diseases. Applying 0.5% Bordeaux mixture to the trunk and spraying 0.125% carbendazim to prevent and treat autumnal diseases and insect pests. N95 Face Mask Online,Kn95 Approved Face Mask,Kn95 Approved Mask,Kn95 Respirator Mask Guangdong Jia Mei Biological Technology Co.Ltd , https://www.jaymeimask.com