Fruit base fertilizer is generally divided into autumn, winter and spring planting, that is, from the fruit harvest to the spring before the spring of this time. Practice has proved that the best results are in autumn, especially for deciduous fruit trees. This is because the higher temperature in the autumn and the strong microbial activity in the soil are conducive to the decomposition of fertilizers and the absorption of nutrients by the fruit trees, thereby enhancing the functions of the leaves and synthesizing more organic nutrients, which will have a good effect on germination, shoots, and fruit setting in the coming spring. At the same time, it can also enhance the cold resistance of the tree, which is conducive to safe wintering. However, the following points should be mastered during the autumn fertilization.
The fertilizers were mainly organic fertilizers and slow-acting fertilizers, such as manure fertilizer, soil miscellaneous fertilizer, cake fertilizer, and grass ash, etc., and appropriate combinations of available N, P, and K fertilizers. The application amount of organic fertilizer should account for more than 90% of the total annual fertilization.
The amount of fertilizer used should be based on the size of the fruit, nutritional status, and the number of fruits. Each plant applies 35-50 kg of organic fertilizer, 1-1.5 kg of superphosphate and 0.4-0.5 kg of urea.
The method was combined with orchard ploughing, using radial furrows or annular furrows. Fertilization depth 40-50 cm. The apples and pears were applied slightly deeper, and the peaches and vines were slightly shallower. Cover with soil after fertilization.
After watering and fertilizing, pouring 1-2 times permeated water can not only make the fertilizer have enough water to ferment and decompose with rapid rot, but also can make the fruit trees not dry during the autumn season. After watering, it can also be covered with crop straws, weeds and other materials.
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