1. Phytophthora physiological disease, generally occurs in the second bud of fruit buds. At this point, the fruit enters the rapid expansion stage, and the expansion of the pulp is often faster than the growth of the fruit, causing the peel to crack. Especially when it rains for a long time, the fruit trees absorb a lot of water, and the fruit quickly expands, expanding the peel and forming fruit cracks. Therefore, the water management of peach must be taken care not to make the soil too dry. During the fruit enlargement period, the proper soil moisture content has been maintained and the expansion of the fruit has been carried out steadily. In the case of long drought, do not pour a lot of water. After the rainstorm, it must be drained in time and it must be air-dried to reduce excessive supply of water.
2. The soft rot of the peach fruit along the abdominal suture is also a physiological disease. From the aspect of nutrient deficiency, calcium deficiency is the main reason. Peach trees are particularly sensitive to calcium. Calcium deficiency not only causes softening and rot in the ventral line, but also decreases the hardness of the entire peach. The taste deteriorates and the resistance to storage decreases. There are two ways to absorb calcium, one is root absorption, and the other is leaf absorption. In recent years, many fruit growers have used large amounts of organic fertilizer, especially chicken manure. Organic fertilizers are not fermented. After they are applied to the soil, they generate a lot of heat during the fermentation process and burn out the tender roots, greatly affecting the absorption capacity of the roots, weakening the trees and causing premature aging and even death. It also affects calcium. absorb. Foliar calcium effects are generally less obvious. This is very much related to the type of calcium fertilizer used on the foliage because calcium is less mobile in the crop. It is recommended that the best choice of foliar calcium mannitol chelated calcium, glycosides, calcium or fruit and vegetable calcium, etc., these calcium in the tree body can be up and down about the conduction, so that the surface of the calcium can be transmitted to the fruit, increased calcium The effect of use. In addition, there is a certain relationship between fruit cracking and calcium deficiency. Increasing calcium fertilizer can make the peel harder, increase the toughness, and also have a certain effect on preventing fruit cracking.
2. The soft rot of the peach fruit along the abdominal suture is also a physiological disease. From the aspect of nutrient deficiency, calcium deficiency is the main reason. Peach trees are particularly sensitive to calcium. Calcium deficiency not only causes softening and rot in the ventral line, but also decreases the hardness of the entire peach. The taste deteriorates and the resistance to storage decreases. There are two ways to absorb calcium, one is root absorption, and the other is leaf absorption. In recent years, many fruit growers have used large amounts of organic fertilizer, especially chicken manure. Organic fertilizers are not fermented. After they are applied to the soil, they generate a lot of heat during the fermentation process and burn out the tender roots, greatly affecting the absorption capacity of the roots, weakening the trees and causing premature aging and even death. It also affects calcium. absorb. Foliar calcium effects are generally less obvious. This is very much related to the type of calcium fertilizer used on the foliage because calcium is less mobile in the crop. It is recommended that the best choice of foliar calcium mannitol chelated calcium, glycosides, calcium or fruit and vegetable calcium, etc., these calcium in the tree body can be up and down about the conduction, so that the surface of the calcium can be transmitted to the fruit, increased calcium The effect of use. In addition, there is a certain relationship between fruit cracking and calcium deficiency. Increasing calcium fertilizer can make the peel harder, increase the toughness, and also have a certain effect on preventing fruit cracking.
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