What problems should be paid attention to in the cultivation of walnut trees?

What problems should be paid attention to in the cultivation of walnut trees? In the cultivation of walnut trees, we should pay attention to the following problems: walnuts are widely distributed in China, ranging from southern Liaoning in the north to northern Fujian in the south, Shandong and Zhejiang in the east, Qinghai, * and Sichuan in the west. The altitude can grow normally under the condition of 500m-2500m. Walnuts grow well between 500m-1000 meters above sea level in our province. Walnut likes light, fertilizer, water and developed root system, so the walnut orchard should choose the place with good soil fertility, soil thickness above 1.5 meters, slope below 25 degrees, leeward to the sun, space circulation and sufficient sunshine. For the recommended planting density of walnut, the plant row spacing of early dwarf varieties was 3.5 m × 5 m or 4 m × 6 m, 38-28 plants per mu, while that of late-bearing varieties was 5 m × 7 m or 6 m × 8 m, 19-14 plants per mu. There are many walnut varieties and different characteristics in the cultivation and planting of walnut seedlings. in order to cultivate excellent walnut varieties, we must first understand the reproductive characteristics and advantages of walnut, and master various key points and techniques of its grafting. Actively cultivate excellent varieties to enhance their adaptability and resistance to diseases and insect pests. The main contents are as follows: 1. To solve the problem of removing the inferior walnut and selecting the best walnut to increase the economic benefit. Walnut is mostly cross-pollinated, with mixed varieties and great differences in advantages and disadvantages. In order to get good varieties with stable and high yield, early fruit and strong resistance, the best way is grafting seedling. 2. The problem of seedling purity can be solved. Due to the implementation of the project of returning farmland to forest and large-scale cultivation of walnut, walnut seedlings are in short supply. Therefore, the phenomenon of "cutting with one knife" false grafting and grafting inferior varieties appeared in seedling grafting, which caused extremely serious consequences, so it is necessary to strengthen study, actively practice, and strive to grasp the technology to improve the seedling identification ability. Several measures that should be taken in the development of walnut planting: 1. It is necessary to strengthen the publicity of science popularization so that farmers can fully understand the relevant knowledge of walnut seedling cultivation and cultivation. 2. To improve the cultivation speed of superior walnut seedlings and strengthen the comprehensive management after planting. With the expansion of the cultivation area of superior walnut, the supply of superior walnut scion increased. 3. Popularize grafting technology, do well the training of grafting technology, mobilize the masses to raise seedlings vigorously, improve the yield and quality of seedlings, and reduce the price of superior grafted walnut seedlings as soon as possible, so as to increase farmers' ability to develop walnut. 4. Forestry administrative law enforcement departments should step up efforts to crack down on fake and shoddy seedlings, severely crack down on illegal personnel who manufacture and sell fake seedlings, purify the seedling market, and allow farmers who plant walnut seedlings to really buy genuine superior walnut seedlings and reduce unnecessary losses. Only in this way can walnut, an ancient economic tree species, develop healthily in a scientific, orderly, reasonable and efficient direction. Click to get more hickory planting techniques click to get more fruit planting techniques