How to choose walnut seedlings?

How to choose walnut seedlings? What should I pay attention to when buying walnut seedlings? Also ask experienced netizens to help introduce walnuts to reduce the absorption of cholesterol in the intestinal tract, which is beneficial to patients with arteriosclerosis, hypertension and coronary heart disease. Walnuts also effectively improve memory, delay aging and moisturize the skin. And with the popularity of walnut in recent years, the planting area of walnut is getting larger and larger, so the farming network sorted out the first key point of walnut planting: select walnut seedlings, the following detailed list of key points for netizens' reference. First, the selection of walnut varieties: because there are many walnut varieties, such as sesame walnut for entertainment and edible walnut divided into thin skin and thick skin, and the introduction should be decided according to the disease resistance, drought resistance, cold resistance, fruit quality, difficulty of management, adaptability to local soil climate and other characteristics of walnut varieties. You can't just look at a few samples of walnut and decide to plant a variety on a large scale. Generally, the varieties suitable for planting in the north are Xifu, Liaohe, Zhonglin and other varieties. Jinlong is a late-maturing variety, but the fruit shape is good-looking. These varieties are developing rapidly, but they may be relatively cold and not suitable for planting in Heilongjiang. Other varieties that can be planted in the south in the north are Luguang and Fenghui, and Xiangling can be planted in the south. 2. Selection of walnut seedlings: 1. Walnut seedlings: generally, walnut seedlings are cut at the cost of seedlings. This kind of walnut seedlings bear fruit for 5-8 years because of late fruit, and have low yield, poor quality and thick shell, so they are of low commercial value, so planting is not recommended. 2. Walnut primary seedlings: the so-called primary seedlings refer to the seedlings of early-bearing and thin-skinned walnut. Most of the walnut seedlings of this variety can bear fruit in the second year or even in the same year, and the high yield is also good, but the quality, tree size and fruit appearance are separated and differentiated. 3. Walnut grafted seedlings: because walnut contains tannin, it is difficult to graft and breed, so the number of grafted seedlings is relatively small, and the price is more expensive. In general, the skin color of the grafted walnut seedlings is often inconsistent with that of other parts of the seedlings, but the skin color of the fake seedlings after being scratched is the same, so attention should be paid to the discrimination. If the walnut grafted seedling is "split", the "grafting mark" is "V" type, and if it is "bud grafting", it is "mouth" type. Third, the choice of walnut seedling size: because the walnut seedling size is also the standard to measure the price, walnut seedlings are generally divided into 30-60cm, 60-100cm, 100cm three grades. Can choose and buy according to their own wishes, it is recommended to buy more than 70cm seedlings, can effectively ensure the survival rate, but also conducive to the fruit of the second year and tree management. Fourth, the choice of walnut seedling suppliers: 1. As a regular seed and seedling supplier, there should be a special seedling breeding farm. For example, the longer the years of the seedling farm, the stronger its strength, and agriculture depends on technology and experience. The longer the time, the more technical experience accumulated. The more secure the grafted walnut seedlings are. 2. To fully understand the source of walnut seedlings, a regular seedling supplier should have a certain planting base, seedling demonstration garden and scion garden, so as to ensure the variety and quality of walnut seedlings. 3. Whether the seedling suppliers can sign a contract to ensure the purity of their varieties and sign a contract that is binding on both sides is of great help to ensure the purity of walnut seedlings. 4. Because there are many dazzling companies, many of them operate without a license and belong to illegal enterprises. If you operate seedlings, you must have a seedling production license, a forest seedling management license, a business license, and so on. Fifth, the planting time of walnut seedlings: in the "dormancy" of walnut seedlings (that is, walnut seedlings whose petioles fall off from the trunk when they stop growing under the influence of low temperature) and "semi-dormancy" (that is, after the Beginning of Autumn, walnut seedlings stop growing, but because the temperature is slightly higher, the petiole has not yet fallen off), it is the season for planting trees before the walnut seedlings sprout in the coming year (the second year). Or it can be planted when the soil temperature is more than 15 ℃. But the sooner you plant it at this time, the better. The pruning method of how to make walnut trees bear more fruit