First, remove the film
After the peach trees are harvested, they need to be peeled off and turned to open field cultivation management. When the film is uncovered, it is best to exercise after 5 days of exhalation so that the peach plants in the shed can obtain certain resistance, and then remove the film. If all the membranes are directly removed, physiological obstacles are likely to occur, such as the yellowing of the leaves of the plants in different degrees, which seriously affects the normal growth of the plants; the flower buds have poor differentiation quality, and the tree stores less nutrients, which affects the yield of the plants.
Second, after pruning
After peach trees are harvested, pruning should be carried out in summer, such as wiping buds, wiping shoots, picking hearts, and sparse shoots. As a result of the branches on the peach tree in the greenhouse, the leaves have been aged after a long period of growth. Even if flower buds are formed, high-quality flower buds are less. In addition, if the original result branches continue to grow, it is easy to close the tree. Therefore, it is necessary to carry out sparse cutting of the original result and trigger new results. Because the upper and outer shoots are overly prosperous after trimming and cover the sun, the lower part and the inner part of the shoot are difficult to see light, and the growth is weak (that is, strong and weak, and strong and weak), so they should be strictly in accordance with the original Tree shape pruning. If it is a spindle-shaped tree, the upper competition branches or dense branches on the main trunk should be sparsely removed so that the trunk extends forward and the main branch forms the resultant branch axis. At the same time as the emphasis on the upper part of the sparse, the lower part and the middle of the trunk should be given more branches in order to suppress the occurrence of strong phenomenon. The happy-shaped tree should be cleared of the densely squeezed branch axis, and sparsely cut some branches to assist the tree body and restore the canopy as soon as possible.
Take toppings, cutting tips and other measures in the summer to make it secondary branches and turn them into fruiting branches. On the one hand, the branches are hauled on the one hand in the autumn, mainly adjusting the branches and extending the direction and angle of the branches to promote branching and preventing strong growth. On the other hand, the branches are taken out to remove the dense branches and legged branches and to improve the lighting of the crown. The conditions promote vegetative growth to flower bud differentiation and transformation.
Third, spray paclobutrazol
The application of paclobutrazol for controlling flower growth is an important measure in peach cultivation in protected areas. After pruning the fruit in the peach tree, it should be controlled by paclobutrazol for the new shoots to promote flower bud formation. Starting in mid-June, continuous spraying of 15% paclobutrazol solution 300-500 times liquid, overspending peach trees should be sprayed 2-3 times in succession, spraying Zhongdou trees 1-2 times, spraying cloth should be uniform.
Fourth, fertilize and water
Peach trees in protected areas are often planted in dense planting styles. The conditions for ventilation and light transmission are poor, and the nutrient storage level of trees is lower than that of open fields, directly affecting the yield and quality of the following year. Therefore, the fertilizer and water management after fruit harvesting must be strengthened.
1. Top dressing. After fruit removal, the fruit was applied to organic compound fertilizer in fruit trees in a timely manner, reducing or not applying nitrogen fertilizer, and increasing the amount of phosphorus and potassium fertilizer. Top dressing should be based on the age of the tree. In addition, it is also possible to apply top dressings outside the roots and spray photosynthetic fertilizer or 0.3% urea plus 0.3% potassium dihydrogen phosphate solution every 10 days. Fertilizers can be sprayed separately or sprayed.
2. Drain irrigation. Peach trees are afraid of embarrassment. Therefore, it is necessary to pay attention to drainage during rainy seasons, especially in plains and clay lands, so as to prevent accumulation of roots and damage to the roots, thereby causing adverse effects on the growth of the ground.
Xi'an complex bio-tech CO.,LTD. , https://www.complexpowder.com