Nutritional singleness At present, fruit farmers management orchards generally have the advantages of “heavy yield, light weight; heavy inorganic, light organic; heavy, light; heavy underground, light groundâ€, resulting in unscientific ratios of crop elements. Balance, affecting the balanced absorption and utilization of nutrients by plants, it is easy to induce deficiency diseases and cause fruit drop.
Serious "overload" due to the dense buds of kiwifruit, such as Huayou, Hongyang and Zaojin, which are dense, frost-resistant and high in germination rate. If you do not pay attention to germination, topping and sparse flowers, you will consume too much nutrients once you enter the reproduction. During the growing period, the tree potential will gradually weaken, and it is impossible to ensure the necessary nutrients for fruit growth, which will inevitably cause flowering, fruit drop, and even premature aging.
The tree is prosperous because the vegetative growth is too strong, a large amount of nutrients are consumed by the shoots, and the fruit-bearing stamina is insufficient, causing almost all the large fruits on the periphery of the fruit trees to fall off, and it will induce ulcer disease in the coming year.
It is very important to ignore the prevention of insect pre-flowering and the application of boron and calcium supplementation. If the nutrition is not prevented and supplemented in advance, the bacteria will fall into the wound from the petals.
Improper pollination of the pollination tree was improperly matched and did not fully pollinate.
Abuse of hormones In recent years, some fruit farmers have applied "Daguoling" on kiwifruit, causing the cells to split too fast, leading to cracking of the heart, hardening and browning, loosening of the flesh, and poor disease resistance of the fruit.
Bagging is too early because the fruit is too heavy, the proportion of leaves and fruits is seriously dysfunctional, and the fruit burning disease is serious, and the time for bagging of fruit farmers is generally advanced. It is recommended that the bagging should be better than high temperature weather, and the bagging is best after coloring, and the method of appropriately increasing the thickness of the leaf layer layer can be adopted to cancel the bagging.
Insect pests such as cockroaches or spotted wax mites cause a hard spot on the fruit, which forms a sponge under the hard spot and rots in severe cases. Coal pollution is also caused during the hazard process, causing coal-like contamination of fruits and leaves. The leaves cannot be photosynthesized and dried up, and fruit drop occurs.
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