Under the same cultivation and management conditions, the cracking degree of different loquat varieties is very obvious. Big clock, orange, etc. Serious cracking, slight cracking in Jie Fangbei, Changhong No.3, Taicheng No.4, Red Lantern, etc. It hardly cracked. So try to choose varieties that are not easy to crack. Due to the progress of cultivation techniques, the phenomenon of fruit cracking has gradually decreased. Therefore, taking effective cultivation and management measures is the key to prevent fruit cracking.

2 fruit bagging

Bagging loquat after the last thinning can create a suitable and stable growth space for the fruit, which is one of the most reliable methods to reduce fruit cracking caused by bad weather. At the same time, it can reduce pests and diseases, mechanical injury, sunburn and freezing injury. Do a good job of pest control before bagging. When bagging, first bind 2 ~ 3 leaves at the base of the ear, so that the bagging must bulge and not touch the fruit. The mouth of the bag can be tied tightly with string or fine iron wire. Fruit should be bagged after harvest.

3 scientific water supply and fertilizer supply

Applying organic fertilizer to increase soil water and fertilizer conservation capacity is not only the material basis for high yield and high quality of loquat, but also one of the technical measures to effectively reduce fruit cracking rate. During the growth and development of loquat fruit, special attention should be paid to the uniform supply of water. In the arid orchard, irrigation supplements the water shortage. In orchards without irrigation conditions, water storage ditches are used to store water, and grass is planted between rows of orchards and trees are covered with grass to improve the air humidity of orchards and keep the soil suitable for the growth and development of fruit trees. In rainy or rainstorm season, the orchard should drain the accumulated water in time, so as to facilitate the steady increase of fruits and reduce fruit cracking. At the same time, paying attention to the combined application of nitrogen, phosphorus, potassium and calcium fertilizers, especially adding potassium fertilizer, can also reduce loquat fruit cracking to some extent.

4 Reasonable shaping and pruning

Loquat shoots have strong germination ability. If pruning is not strengthened, it is easy to cause tall crown, many branches and twigs, disordered tree body, affecting water and nutrient supply, poor fruit growth and development, and aggravated fruit cracking. On the contrary, if the crown is short and the branches are thick, it is beneficial to the full and balanced supply of water and nutrients, to the balance of water absorption and transpiration, and the fruit grows well and looks neat and consistent, it can reduce fruit cracking. Therefore, pruning techniques such as stem fixing, shaping, branch pulling, bud pruning and short cutting should be adopted to cultivate dwarf crowns. Abundant trees should rotate, retract and renew the backbone branches, wipe buds and prune them, cultivate strong fruiting branches, promote the healthy and balanced growth of loquat fruits and reduce the occurrence of fruit cracking.

Five chemicals to prevent fruit from cracking

In the process of loquat fruit growth and development, spraying certain chemicals on the crown can reduce fruit cracking. It is reported that spraying 800×10 ~1000×10 ethephon can effectively prevent loquat from cracking when the peel turns light green (commonly known as "turning white"), the fruit cracking rate is 89% lower than that of the control, the maturity is 7 ~ 10 days earlier, and the fruit is colored. It also has a good effect on promoting fruit growth and reducing fruit cracking.

6. Strengthen pest control

Doing a good job in pest control, especially spraying drugs in time during the young fruit period and after fruit thinning, can maintain the healthy development of fruits and reduce the occurrence of fruit cracking.