Orchard autumn and winter fertilizer management points

First, timely fertilization should be supplemented with nutrients from both soil fertility and root fertilization.

1. Foliar fertilizer: After a fruit harvest in the orchard, the temperature and ground temperature are still high, which is conducive to the growth and development of fruit trees. The roots enter the third growth peak, and the nutrients produced by the leaves are roots, stems and branches. Transfer and accumulation. Spraying foliar fertilizer can quickly replenish the nutrients that the tree body consumes a lot due to the result, and restore the tree potential as soon as possible. Apple spraying foliar fertilizer can be sprayed once every 10 to 15 days with 0.3-0.8% urine or 0.2-0.3% potassium dihydrogen phosphate solution. The spraying time is no wind or high humidity. Ok, and avoid around noon.

2. Early application of base fertilizer: After harvesting fruit from early-maturing varieties, late-maturing varieties are applied before fruit picking. After application, the green leaves on the tree can be kept for 1 to 2 months. The type of fertilization is mainly organic fertilizer, and a small amount of chemical fertilizer is applied. The amount of organic fertilizer: the medium and low-yield orchard uses the pounds of fruit and fertilizer, and the high-yield and high-yield orchard uses 1.5 to 2 kg of fertilizer. Before the application of organic fertilizer, it should be fermented by decomposing to prevent the feces from burning. Fertilizers need to be combined with nitrogen, phosphorus and potassium fertilizers, and targeted application of trace element fertilizers. For example, high-concentration compound fertilizers are suitable for each plant from 1 to 1.5 kg, and varieties can be used for 18-12-20, 16-16. -16, 18-12-18 and other models of potassium sulfate or 16-8-16 type of ecological fertilizer.

Second, watering and freezing winter fruit trees are susceptible to freezing damage. Autumn or winter management of the orchard should pay attention to cold and antifreeze.

1. Pour the frozen water before sealing. It can increase the soil water content and seal the winter ground temperature. Watering is also one of the ways to prevent cold and frost.

2, tree tray film, cover grass: soil insulation, moisturizing, covering the film can be carried out in the late autumn and early winter, covering grass in spring, summer, autumn can be carried out, covering grass materials with wheat straw, etc., about 75 kg per mu, The thickness should be 15-20 cm. If it is too thin, it will not be able to keep warm, moisturize and freeze. After the grass is covered, it is necessary to press the soil in an appropriate amount to prevent the wind from blowing and burning.

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