In recent years, in many Fuji Orchards in Weibei, Shaanxi Province, the phenomenon of tree growth in the autumn has become common, resulting in a large number of trees ineffective consumption, flowering difficulties, and continuous results of the young year: the main reasons for the analysis are: continuous spring drought, soil The decrease of water content makes most of the nutrients in the soil unable to be fully absorbed by the tree and accumulate. With the advent of the rainy season in July and August, the fruit trees absorb a lot of nutrients under sufficient water, and the growth of roots and autumn shoots are both In the peak period, the performance of the shoots is mad, and it is extremely unfavorable for the full maturation of the late shoots and the formation of flower buds. Adopting effective autumn cut measures is the key to inhibiting the growth of the tree in the late period. 1. Pulling the branch to slow down under the premise of fully rubbing the branches, the branches at different levels and auxiliary branch angles do not meet the requirements of the specification, so that the main branches can be opened at an angle of about 90 degrees, and the auxiliary branches can be greater than 90. degree. When kneading the branches, first knead the left and right sides to soften the branches, and then knead the base corners. The biggest characteristic of autumnal branches is that the branches tend to relax, which is beneficial to the ripening of branches, and can promote the development of short and middle branches, which is conducive to flowering. According to the author's experiment on the 5-year-old rich soil, after the autumn pull branch, the average growth of autumn shoots was 53.40% lower than that of unbranched shoots, while the short branch amount was increased by 85.70% and the flowering amount was increased by 5.30 times. For autumn shoots, the effect of slowing down was even more pronounced, and the growth of autumn shoots was 2.40 times less than that of non-pulled shoots. Saplings in autumn should account for 50% to 60% of the total number of branches in the year when the branches were thinned, twisted, and picked up. Adult trees should also account for 25% to 30%. 2. Suppressing Fujitsu trees tends to appear strong and weak, especially in dense orchards. The top leggy branches, competition branches, inward branches and some dense shade branches are in the middle and late stages of tree growth. Its madness is more prominent. Most of these branches do not have any room for growth. When they are cut in autumn, they are almost completely removed, and the sooner the better. If there is a small space for the backbone branches and subsidiary branches at various levels after the branches have been pulled on the back branches, the branches and branches may be appropriately twisted, but the total amount retained shall not exceed 15%, and there shall be no space for the strict removal. Otherwise, not only can not suppress the leggy, but also have a greater impact on the coloring of the later fruit. The back and back competition stems issued by the extension head of the backbone branch should be completely removed. If the competition branches on the side have less room for expansion in the crown, they should be treated as short cuts to cultivate the resulting branches as soon as possible; when the canopy has been sufficiently long without expansion space, it can be removed and a small amount of twisted branches can also be made. So that the canopy reaches the outer thin inner dense, good light transmission performance. 3. The main objects of wearing hats and hats in autumn and wearing caps are: auxiliary branches, branches at various levels and branches of single-axis branches. All the branches and branches of Qiangwang auxiliary support were treated with live hats, while some of the weaker branches with long branches and golden mean trees were decorated with dead caps, which facilitated the emergence of multiple branches, enhanced grades, and promoted early flowering. Over-strength shop branches can choose to wear live caps at the junction of the new shoots and the annual branches, so the effect of promoting flower slowing is better. According to investigations, the above treatment for over-strength-stored branches was increased by an average of 53.70% over the untreated branches. Therefore, this method is extremely useful for the treatment of axillary branches at the young tree stage. In late autumn, 20-30 centimeters are reserved for the autumn shoots that extend the length of the main branch. This will make the branches robust and strong and increase the ability to withstand cold in winter. 4. Moderate circumcision When rainfall is particularly high in June-August, especially when thunderstorms occur frequently, each thunderstorm is equivalent to giving the tree 1 stage foliar and topdressing nitrogen fertilizer, which further promotes the growth of shoots. Even if the following three methods are adopted, it is difficult to control its growth potential, which is extremely unfavorable to the normal growth and development of the tree and the formation of late flower buds. With the advancement of the tree potential, step-cutting technology is accurately applied. It can have a number of effects. For over-mowing trees that have not been circumcised from May to June, one circumcision can be performed on the main branch and large lateral branch from late July to early August; the circumcision is still strong from May to June but the tree vigor is still strong. Wang's tree should be repaired at the beginning of September in the main branch or auxiliary branch or large lateral branch on the original ring incision, the inhibition of the post-mad length. However, it must be noted that the incision must not be too deep. Touch the essence of the Ministry can not be circumcision. At the same time, due to more rain in July-September, the site of the circumcision should be wrapped with plastic strips to prevent rain from infiltrating and affect healing, and plastic strips can be removed after 10 days of ring cutting. The suppression of madness does not make the tree-trend turn from overmuch to weakness, but tends to mean. China Agricultural Network Editor
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