1, regulating tree nutrition:
Smaller application of phosphate fertilizer, increase the application of potash, nitrogen fertilizer, farmyard manure, regulating tree nutrition, can reduce cracked fruit. Specific operation is: late July to early August in the fruit tree under the canopy on both sides of the hole dug 30 ~ 40 cm deep, the application of human and animal manure 30 kg, 0.2 kg of urea, 0.2 kg of potassium chloride, or grass ash 3 ~ 5 kg; foliar spraying 0.3% potassium sulfate or potassium dihydrogen phosphate, sprayed once every 7 days.
2, irrigation and moisturizing:
Volts of drought during the July to August, in case of soil drought, should be flooded to combat drought. First spray the canopy with a sprayer, then irrigation, and cover the ground with crop stalks and weeds. This will enable the tree pan to maintain uniform soil moisture, enhance the orchard water storage and water retention capacity, thereby reducing water evaporation and reducing fruit cracking. To the winter can be mulch with the clearing of the deep turning buried in the soil as fertilizer.
3, strengthen the management of plowing:
Drought in the early stages of shallow plowing in the tree pan 8 ~ 12 cm, deep plowing between the rows of 15 ~ 25 cm, after the rainfall should be timely exclusion of stagnant water in order to prevent the soil moisture imbalance, so that the fruit can avoid absorbing too much water to make the inner diameter of the expansion, which produces cracked fruit.
4, timely tip control:
When a large number of summer and fall tips, will be too long branch tips appropriate short cutting and centering, too much summer and fall tips sprouting to about 2 cm when timely erased, can effectively control the cracking fruit.
5, timely fruit thinning:
Generally in July will be small fruits, deformed fruits, pests and diseases fruit thinning, in order to protect the normal fruit growth, reduce cracking. For the fruit has been cracked should be retained in the tree, do not remove, through the crack water evaporation, in order to maintain the relative balance of soil moisture and tree moisture, to avoid the production of new cracked fruit.
6, spraying hormones and fertilizers:
200 mg/kg "nine twenty" spraying fruit can prevent cracking, and has the effect of promoting fruit expansion. In addition to 150 grams of urea, 100 grams of potassium chloride, 100 grams of vinegar, 100 grams of lime to 50 kilograms of water in the early morning or evening spraying the fruit, but also anti-cracking effect.7, reasonable pruning:
Pruning to keep each fruit on the 3 to 4 leaves, to avoid direct sunlight caused by sunburn and cracked fruit.