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Chestnut bottles have zero emptying rate
Chestnuts are empty and there are no chestnuts in the chestnuts. The masses call them dumb chestnuts. This phenomenon seriously affects the output of chestnut. According to the survey, chestnuts normally grow in areas that have an average of 15%. In many areas, the empty rate accounts for 50%, and in some mountainous regions, the leisure rate of chestnuts accounts for 90%, which is serious in Hebei, Shandong, and southern provinces. Chestnut pods are mainly caused by boron deficiency. Boron is an essential element in the fertilization process. Without boron, it cannot be fertilized normally, resulting in early abortion of the embryo. This is the real cause of the emptiness. For this reason, boron was applied in three ways: root irrigation, foliar spraying, and drilling and hanging bottles. After 3 years of experimentation, the emptying rates of the three methods were (the crown diameter was 3?). 4 meters of chestnut trees: 3.34%, 11.56%, 0; the control tree without boron applied was 27.38%, and the experiment proved that the best effect was to use a bottle. Take a tree with a canopy diameter of 3-4 meters as an example. Select a smooth surface on the trunk 1 meter away from the ground. Drill a hole with a small hand. The hole diameter is about 0.5 centimeters, deep to the tree core, and the hole is a 45 degree slope. Drill inside to drill for "infusion." The amount used is 0.5 mg of 0.5 mg of available boron per plant for dilution to 0.5 ppm. Place the prepared boron solution in the bottle, put one end of the infusion tube used for hanging the bottle into the bottle, insert one end into the tree hole, and hang the bottle upside down on the tree. The flow rate of the boron solution depends on the situation. Boron does not overflow the tree hole. The time for hanging bottles is generally selected during the peak season of sap flow. It is better that the chestnuts are in the early stages of flowering. The tree holes must be sealed with glue after the bottles are bottled to prevent pests from entering the room. One time (one year) hanging bottles can be played at intervals of about 3 years.