Orchard autumn and winter fertilizer management

First, timely fertilization should be from the soil fertilization and root fertilization in two aspects of tree nutrition.

1. Shiye flour: After a period of fruit picking in the orchard, the temperature and ground temperature are still high, which is conducive to the growth and development of fruit trees. The root system enters the third peak of growth. The nutrients produced by the foliage are directed to roots, stems and branches. Transfer, accumulation. Spraying foliar fertilizer can quickly supplement the nutrient that the tree consumes in large amounts as a result, and restores tree vigor as soon as possible. Apple spray foliar fertilizer can be used 0.3 to 0.8% of urine or 0.2 to 0.3% of potassium dihydrogen phosphate solution, spray once every 10 to 15 days, spray time to no wind, high air humidity weather Well, and avoid around noon.

2. Early application of basal fertilizer: After the early and mid-maturing varieties are harvested, the late-maturing varieties are applied before the fruit is harvested. After the application, the green leaves on the trees can be kept for 1 to 2 months. Fertilizers are mainly organic fertilizers, with a small amount of chemical fertilizers. Organic fertilizer dosage: low-yield orchard uses kilograms of fruit fat, high-yield and high-yield orchards use kilograms of 1.5 to 2 pounds of fertilizer. Before organic fertilizer is applied, it must be decomposed and fermented to prevent burning of raw manure. Fertilizer requires nitrogen, phosphorus, and potassium fertilizers, and targeted trace element fertilizers. If high-concentration compound fertilizers are used, the appropriate amount of each plant is 1 to 1.5 kilograms. 18-12-20 and 16-16 can be used as varieties. -16, 18-12-18 and other models of potash fertilizer or 16-8-16 type of ecological fertilizer.

Second, water-freezing Winter fruit trees are susceptible to freezing damage. Autumn or winter management of orchards should pay attention to cold and frost protection.

1, before pouring frozen frozen water: can increase the soil moisture content, seal the winter ground temperature, watering is also one of the ways to prevent the late spring cold, frost.

2, the tree disc cover, cover grass: the soil insulation, moisturizing, covering the film can be carried out in the late autumn and early winter, covered grass in spring, summer and autumn can be carried out, covered with straw and more wheat straw, etc., about 75 kg per mu, Thickness of 15 to 20 cm, too thin will not achieve the effect of insulation, moisturizing, antifreeze. After the grass is covered, the soil should be pressed properly to prevent wind and fire.

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