1, reasonable summer cut, timely control
After the harvest of sweet cherry, for those who have grown dense branches, thin branches, whip sticks, and pests and branches, thinning or shortening should be carried out so as to open the light path, enrich the branches, and reduce unnecessary consumption, which is favorable to flower buds. Diffused and matured shoots. Through twisting tips, picking up the heart, pulling branches and other methods. After Wangshuo can't restrain the growth after adopting various summer shearing measures, it should timely spray 200-300 times paclobutrazol or 180-200 times PBO for control. According to the principle of spraying the shoots only for half a month, the general Wangshu spray 2-3 times to receive better inhibition.
2, timely fertilizer, increase the tree reserve
Early base fertilizer, fertilization should be in early September. At the same time, it is accompanied by fertilization measures such as basal fertilization and foliar dressing.
Within one week after harvesting, combined with pest control, spraying 0.3%-0.5% potassium dihydrogen phosphate + 0.5% urea 1-2 times, delaying the defoliation, and promoting the development of flower buds.
3, control pests and diseases
The critical period for the prevention and control of fleas and caterpillar pests is avermectins before spraying. The caterpillars can be sprayed with pyrethroid pesticides. Bacterial perforation, leaf spot, and other prevention and control period is mainly from leaf spreading to the arrival of the rainy season. Agricultural streptomycin can be used 1000 times solution plus thiophanate-methyl or Dasheng M-45 600 times liquid, alternate spraying at intervals of 10-15 days. , both prevent disease, but also significantly improve the fruit surface finish. It is advisable to remove glue from the tree body in the place where the body fluid flows. After the plaster is coated with lime powder or thiophanate pudding, it is wrapped in a film. Always check and follow the control.
4, irrigation
After fruit harvesting, flower bud differentiation is mainly performed to restore the tree body and ensure normal flower bud differentiation. Immediately after harvest, fertilization and irrigation should be performed immediately. However, the amount of irrigation water is the degree of wetness in the ground, and short-term drought after irrigation is conducive to flower bud differentiation. During the growing season of sweet cherry, irrigation should not be excessive, and generally the soil moisture should be maintained at about 70% of the field water capacity.
5. Drought prevention and drainage
The sweet cherry orchard must be drained smoothly, ensure that it is drained within 2 hours after the rain, and try to drain manually to ensure that there is no water in the park. Before the rainy season, dig out the drainage ditch. The plots with a history of rushing should be ridged and cultivated, and each ridge can be gradually ridiculed at 5cm.
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