Sweet persimmon summer tube four note
July is the young fruit period and fruit enlargement period of sweet persimmons. The management of this period is very important for sweet persimmons. The author consulted Zhang Zhicheng, a fruit specialist and senior engineer of Northwest Agriculture and Forestry University, on summer management technology of sweet persimmons. He reminded the fruit grower that the sweet persimmon summer tube needs to pay attention to the following four points:
After the physiological fruit drop at the end of June to July, the fruit thinning fruit persimmon will be selected according to the ratio of 20 to 25 leaves with one fruit, and the young fruit with no pests and diseases will be selected.
Ring skinning For adult tree, ring peeling is performed in summer. The method is to use a sharp knife to cut a band of 2-3 mm wide on the trunk ring, and gently cut it with the tip of the knife, but do not harm the xylem. Then gently pick and peel the narrow bark with the tip of the knife. The purpose of ring peeling is to prevent the transfer of nutrients produced during the photosynthesis of persimmon leaves - carbohydrates to the roots.
Weeding and weeding According to the growth of weeds, weeding and weeding are used 2 or 3 times. In the drought from July to August, it is necessary to irrigate drought in time. All persimmon gardens that are not intercropped should be covered with grass, and they can be fattened.
Dressing from June to July is the peak season for the growth of persimmon trees, with strong ability to grow roots and shoots. For saplings, the fertilization amount per plant was 20 g of pure nitrogen, 10 g of superphosphate, and 20 g of potassium chloride. The adult fertilization rate per tree was 4 kg of pure nitrogen, 4 kg of superphosphate, and 4 kg of potassium chloride. Generally selected on the cloudy or sunny day before 9 am and after 5 pm, the above three kinds of fertilizers are applied and then filled with soil.
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