In the late growth period of fruit trees, due to the strong activity of roots, the content of gibberellin in the tree is too high, resulting in excessive absorption of nitrogen and relative reduction of calcium, which leads to the imbalance of nitrogen and calcium in the flesh and the occurrence of bitter pit disease. Therefore, irrational fertilization is one of the reasons. Usually pay attention not to abuse nitrogenous fertilizers, try to use decomposed farmyard fertilizers or commercial organic fertilizers, it is best to re-apply in the fall, spring less, fertilizer combined with photosynthetic nutrient film fertilizer, can help plants absorb a lot of light fertilizer, light energy , light, compatible with conventional fertilizers, nutrients for plant growth and development to the limit. Apply once a year to benefit. Spraying Zhuangguo Tiling in time before flowering, young fruit stage and inflating stage can activate the positive energy of plant ecological growth, broaden the route of plant pipes, increase plant water absorption and absorption, increase fruit yield and quality, reduce fruit drop rate, and reduce fruit cracking. The incidence of fruit, nuts, and deformed fruit. In the young fruit period, three consecutive shots of bag-free film and calcium fertilizer were sprayed, and boron and calcium fertilizers were sprayed twice during the fruit enlargement period. XuChang Youjia Food Product Development Co., LTD , https://www.yjgrain.com