Management of persimmon trees planted with persimmons after fruiting

Timely fertilization when the transverse diameter of the fruit is 4cm and the fruit size is basically fixed, strong fruit fertilizer and pre-harvest fertilizer are applied, mainly quick-soluble nitrogen, phosphorus and potassium fertilizer, urea 1.5 kilograms per tree, potassium dihydrogen phosphate 0.75 kilograms per tree, or nitrogen, phosphorus and potassium compound fertilizer 1 kilograms, 1.5 kilograms after rain, or 60 kilograms of fresh water, or 40 kilograms of rotten manure after retting. Or dig a ring ditch with a depth of 20 cm and a width of 30 cm around the crown drip line. Before applying fertilizer, all kinds of weeds on the tree plate must be eradicated first. After fertilization, the tree plate is covered with straw or other weeds. The grass is 3 to 5 centimeters thick to improve the effect of fertilization.

Disease control and pest control in the middle and later stages of persimmon fruit, the fruit is vulnerable to anthracnose and brown spot, resulting in a large number of fruit drop, the fruit surface is covered with black spots. Therefore, 800x persimmon disease water solution or 1000 times of Sukeling wettable powder was sprayed once when the transverse diameter of the fruit was 3cm and 6cm respectively. In the fruit ripening period, if there is a scale insect damage, it should be continuously sprayed 2 times 3 times 800-1500 times Jiaojie water solution, or 1000 times the speed of water solution for control. During the period of autumn shoot emergence, the mixture of trichlorfon and 1000-fold dichlorvos was sprayed once when the new shoots were just sprouting, spreading leaves and turning green, respectively, in order to control all kinds of diseases and pests harmful to the new shoots.

Foliar topdressing in the middle and later stage of persimmon fruiting, foliar spraying 800x Gaomei organic humic acid active liquid fertilizer, 1500 times enhanced Yunda-120mixture, or 500x plant activity element, 2500 times Yimi yield-increasing bacteria mixture, or 0.1% magnesium sulfate, 0.2% urea, 0.3% potassium dihydrogen phosphate, 2500 times Lufeng 95 mixture, spray 3 times for 5 times, spray all branches, leaves and fruits evenly It is appropriate to start dripping water.