1. Increase the application of organic fertilizer
Stubble fields should pay attention to improving the soil, adding farm fertilizers, increasing humus, improving soil fertility, harmonizing the soil, water, fertilizer, air, and heat, and creating an environment with suitable temperature, humidity, and complete nutrients for the growth of fruit trees.
2. Rotation for cropping, intercropping and intercropping
The stubble orchard can grow leguminous plants such as soybeans, mung beans, clover and clover, etc., to achieve the purpose of growing in short periods. Rotation and stubble change are carried out by interplanting between rows. It can improve the soil and avoid the lack of certain elements in the soil. It can also reduce the serious occurrence of certain pests and the accumulation of certain harmful (toxic) substances in the soil. Changing the types of fruit trees can effectively alleviate the problem of replanting diseases in replanting fields. For example, in orchards where apples, pears and other pome fruit trees have been planted, stone fruit trees such as peaches and apricots can be replaced.
Three, deep plow the mature soil
Combined with basal fertilizer, deep plowing the soil is conducive to root growth and recovery. Before planting new fruit trees, cut down all old trees, pick up and burn the remaining roots in the soil, and conduct a deep plowing of the entire orchard soil. The planting pits can be weathered in summer or winter. The planting pits are dug in summer or early autumn, and the raw and mature soil are separated. After weathering and sun exposure in summer and winter, they can be backfilled in autumn or early spring of the following year. When backfilling, apply decomposed high-quality organic fertilizer, mix soil and fertilizer and fill it into the pit.
Four, soil disinfection
Spray with formaldehyde and other bactericide solutions to disinfect the soil in the repeated orchard. After the planting hole is backfilled, it can be watered with a fungicide solution. Plastic film can be used to cover the soil in the summer high temperature season, especially the soil covering the planting hole for soil disinfection.
Five, high standard planting
Choose fruit tree seedlings that are free of diseases and insect pests and grow sturdy, requiring a well-developed root system, even distribution of lateral roots and fibrous roots, with little or no water loss in the root system; fresh bark, smooth skin, and good seedling maturity. Soak the roots with fungicide before planting, and then dip the roots with rooting powder and phosphate slurry. Immediately after planting, water thoroughly to make the soil and the root system tightly connected. Cover with mulch. Water once every 7-10 days, and then depending on the soil moisture.
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