How to fertilize sweet persimmon trees?
How to fertilize sweet persimmon trees? Please give guidance to sweet persimmon trees can refer to the following methods of fertilization: (1) Base fertilizer 1. Apply the annular ditch at the edge of the crown projection, dig a circular ditch with a depth of 30-40 cm, mix the fertilizer with the topsoil, and then bury the soil. This method is mostly used for young trees. 2. The radial ditch is centered on the tree trunk, digging 4-8 radial trenches with a depth of 20-40 cm, a width of 30 cm, a length of 1-2 m (depending on the size of the crown), a deep outside and a shallow inside, and filling it with fertilizer. This method is mostly used in adult trees. 3. Strip ditch fertilization when labor or fertilizer is insufficient, ditches can be dug row by row or interrow, combined with deep turning to fertilize. (2) topdressing 1. Topdressing on the ground determines the fertilization mode, location and depth according to the type of fertilizer and the distribution range of roots. The mobility of nitrogen fertilizer in soil is strong, so it should be applied shallowly; the mobility of potassium fertilizer is poor, and the mobility of phosphate fertilizer is even worse. Therefore, phosphorus and potassium fertilizer should be applied to the concentrated distribution layer of root system, and should be applied evenly, preferably mixed with organic fertilizer after ripening. 2. Type and concentration of fertilizer commonly used for extra-root topdressing: ① nitrogen fertilizer. Urea 0.3% Mo 0.7%; ② phosphorus fertilizer. Calcium superphosphate and potassium dihydrogen phosphate leaching solution 0.3% Mel 3%, ammonium phosphate 0.1% Mel 0.5%; ③ potassium fertilizer. Plant ash leaching solution 3% Mel 10%, potassium chloride, potassium sulfate and potassium phosphate 0.5% Mel 1%; ④ trace elements. It is usually 500 mg / kg. Generally in the flowering and physiological fruit drop period, urea is sprayed every other half month, and phosphorus and potash fertilizer can be sprayed in the later stage.
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How can sweet persimmon be planted with high yield?
How can sweet persimmon be planted with high yield? Please give guidance on the planting methods of sweet persimmon can be referred to as follows: first, the environment requires that the annual average temperature of sweet persimmon is 13: 18 ℃, the average temperature of fruit ripening period from June to August is 18: 19 ℃ (the altitude of Shilin county is 1600-1900m), and the sunshine hours from February to August are more than 1400 hours.
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Is there any way to improve the fruit setting rate of persimmon trees?
What method can persimmon tree improve fruit setting rate? Please give guidance to persimmon trees can refer to the following methods to improve fruit setting rate: first, control the first flower of persimmon pedicel insects (subject to one flower in the persimmon orchard) for 7-8 days, you can choose 2.5% 2500 times solution, 21% 2500 times solution, 10% Dolaobao suspension.
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