Young apple trees grow stronger, but their cold resistance is poor and their management is not good. After the winter, they are prone to pumping. In this regard, Yan Zhihui, head of the horticultural station of Fengxiang County in Shaanxi Province, pointed out that doing field management in the fall is the key to the safe wintering of young apple trees, and puts forward the following prevention and control measures. Do a good job in plastic surgery, pruning from early August to early October, topping, pulling branches and taking sticks. The shoots that have not stopped growing are all topping to control growth and promote nutrient accumulation. At the same time, for various types of branches with small angles, pull-pulls are continued on the basis of pulling branches in spring and summer. Generally, the main branch angle is pulled to 70-80 degrees, and the input branches are pulled to 90-120 degrees. When pulling branches, pay special attention. Hold the base of the branches with one hand from the bottom and gently pull the base with the other hand. Slowly pull down to prevent the base from splitting and tie the ropes to form a “loosening mouthâ€. The branches on the main branch, the back branch on the auxiliary branch, and the long branch on the center branch are taken to change their growth potential and growth direction. Method: Use the hand from the base of the shoot from the inside to the outside and force it slightly to grip the twigs so that the twigs will be damaged. The vascular bundles inside the branches will make a "click" noise, but they will not break the twigs and do not damage the leaves at the same time. The shoots are horizontal or sagging. Timely application of basal fertilizer ensures that the basal fertilizer is applied in early September. After the basal fertilizer is applied, the damaged root can heal quickly and the nutrients can be absorbed and utilized by the root system, which can increase the nutrient storage of the tree. Each sapling is applied to a farmhouse fertilizer. About 50 kilograms. Sprayed foliar fertilizer to promote the growth of young shoots full, robust, early maturation, and enhance the wintering of the tree, after August, every 10 to 15 days, spray once 0.3% ~ 0.5% potassium dihydrogen phosphate and 1000 ~ 2000 mg/l paclobutrazol, both can be sprayed simultaneously and sprayed three times. Stop the water in time from August to winter irrigation without irrigation to promote shoot ripening.
Corn, also known as wheat, maize, grain, it is one of the world's three major food crops, planting area and yield after rice and wheat, ranked third.More because of good mouth, high heat, large yield, and is widely used in a variety of livestock feed, thus known as the "King of Feed", in addition, corn is also the three food crops most suitable for industrial raw material crops, its processing of industrial products as high as more than 3000 kinds.
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