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Prevention of late-frost cherry yield four methods
1. Focus on deep turning to improve soil. 1 to 2 years after planting, combined with Shiji fertilizer, ditching between lines or between plants, breaking the status of “flower pot type†impenetrable water in the planting hole, making the planting hole communicate with the ditch, both promoting root extension and resolving the accumulation within the planting hole problem. 2. For the sweet cherry orchards entering the full fruit period, one-time deep turning of the whole garden should be avoided. When the young gardens are deeply turned, sufficient tree trays must be set up so that the root groups will not be damaged and the trees will decline. Deep plowing is best done in late autumn. Immediately after turning, it should be filled with water. 3. The tree tray or the whole park cover grass can reduce soil erosion, but also reduce the evaporation of the ground, keep the soil moisture is relatively stable, increase the winter ground temperature, promote soil microbial activity, improve soil structure, which is conducive to the growth and development of sweet cherries. 4. According to the growth and development characteristics of sweet cherry at different ages, in the period of sapling crown expansion (1 to 3 years old), mainly available nitrogen fertilizers are applied, supplemented with appropriate amount of phosphate fertilizer to promote early canopy formation in the early fruiting period (4). ～6 years old) Apply organic manure and compound fertilizer as the main, control nitrogen, increase phosphorus, make up potassium.