The hot summer weather is often rainy and there are sometimes locust plagues. After the fruit trees are attacked by wind blows, they will cause branches to be broken, and the leaves and fruits will be injured. In severe cases, a large number of fallen leaves and fruit drop will occur, which will not only affect the tree vigor and yield, but also cause the occurrence and spread of pests and diseases. In this case, the following remedial measures can be quickly taken:
First, cut off injured branches and severely wounded fruit. After the wind blows, many new shoots and branches are broken or split, and they can be cleaned and cut off in time, the wounds can be cut flat, and the wound area can be reduced to facilitate healing. Severe wounds damaged by scorpions are seriously detrimental to the development of the harvest. Young, generally injured, younger fruit can be preserved.
Second, spray sterilization pesticides to prevent major diseases. Due to the wind-blown attack, new shoots, leaves, stems, fruits and other parts have different degrees of damage, the bacteria can easily invade the infection, resulting in a major disease, should be based on different tree species spray appropriate disease-preventing agents. The commonly used pharmaceuticals for apples and pears are Bordeaux fluid, 12.5% ​​of myclobutanil 2500 times, 12.5% ​​typhimurium 2000 times or 70% mancozeb 800 to 1000 times. Peach, apricot trees can be used 70% thiophanate-methyl 800-1000 times or 65% 500 times. Grapes can be used with a half Bordeaux mixture, or 75% Chlorothalon 600 to 800 times, or 25% Rhodendron 800 times. Jujube tree can be used times Bordeaux mixture, or 15% triadimefon WP 1000-1500 times.
Third, timely fertilizer. The hail damages a large number of leaves, the production of organic nutrients is hindered, and the healing of wounds requires a lot of nutrition. Therefore, quick-acting fertilizers should be added in time after the disaster. There are two ways to supplement fertilizers: one is to recover available fertilizers underground, and the quick fertilizers should be promptly added after the general results. The big trees in the fruiting period should top up 2 to 3 kg of urea per plant, and it is best to mix some phosphorus and potassium fertilizers. Use more points to cast. The second is foliar spray fertilizer, spraying 0.3% urea or potassium dihydrogen phosphate, can be combined with spraying a piece.
Fourth, loosen the soil. Because of hail slap, soil compaction, poor permeability, low ground temperature, root growth is affected, therefore, timely cultivating loose soil, increase soil permeability, increase ground temperature, low-lying land to do timely drainage work.
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