How to choose walnut saplings? Master these few selection tips
How to choose walnut saplings? What should you pay attention to when buying walnut saplings? We also ask experienced netizens to help explain. Walnuts can reduce the intestinal absorption of cholesterol and are beneficial to people with arteriosclerosis, high blood pressure and coronary heart disease. Walnuts also effectively improve memory, delay aging and moisturize the skin. And with the popularity of Wenwan walnuts in recent years...
How to choose walnut saplings? What should you pay attention to when buying walnut saplings? We also ask experienced netizens to help explainWalnuts can reduce the intestinal absorption of cholesterol and are beneficial to people with arteriosclerosis, high blood pressure and coronary heart disease. Walnuts also effectively improve memory, delay aging and moisturize the skin. And with the popularity of Wenwan walnuts in recent years, the planting area of walnuts has also grown larger and larger. Therefore, Zhongdi Network has compiled the first key point of walnut planting: choosing walnut saplings. Below, the methods and key points are listed in detail for netizens' reference.
I. Selection of walnut varieties:
Because there are many walnut varieties, such as the ornamental Ma walnut and the edible walnuts divided into thin-shelled and thick-shelled types, and when introducing varieties, a decision must also be made after comprehensively weighing multiple characteristics such as disease resistance, drought resistance, cold resistance, fruit quality, ease of management, and adaptability to the local soil and climate. You cannot decide to plant a certain variety on a large scale just by looking at a few sample walnuts.
Generally, varieties suitable for planting in the north include Xifu, Liaohe, Zhonglin and others. Jinlong is a late-maturing variety, but its fruit shape is attractive. These varieties have developed quickly, but they are not suitable for planting in Heilongjiang or in relatively cold areas. Other northern regions are all suitable. Varieties that can be planted in the south include Luguang and Fenghui, and Xiangling can be planted in the south.
II. Selection of walnut seedlings:
1. Walnut seedling grown from seed: generally a seedling produced by knife-scoring a seedling grown from seed. Because this kind of walnut sapling bears fruit late, bearing fruit in 5-8 years, and also has low yield, poor quality and thick shells, its commercial value is low and it is not recommended for planting.
2. Walnut native seedling: the so-called native seedling refers to the seedling grown from seed of early-fruiting thin-shelled walnuts. The vast majority of walnut saplings of this variety can bear fruit in the second year or even the same year, and their productivity is also decent, except that the quality, tree size and fruit appearance segregate and vary considerably.
3. Grafted walnut seedling: because walnuts contain tannins and are a tree species that is relatively difficult to propagate by grafting, the number of grafted seedlings is relatively small and the price is also somewhat higher. Generally, the bark color at the bud-grafted part of a grafted walnut seedling is often inconsistent with the bark color of other parts of the seedling, while counterfeit seedlings after scoring have the same bark color, so attention must be paid to distinguishing them. If a grafted walnut seedling is "cleft-grafted", the "graft mark" is "V"-shaped; if it is "bud-grafted", the "graft mark" is "mouth"-shaped.
III. Selection of walnut seedling size:
Because the size of walnut saplings is also a standard for measuring price, walnut saplings are generally divided into three grades: 30-60cm, 60-100cm, and 100cm. You can purchase according to your own wishes. It is recommended to buy seedlings of more than 70cm, which can effectively ensure the survival rate and is also beneficial to fruiting in the second year and tree shape management.
IV. Selection of walnut seedling suppliers:
1. As a formal seedling supplier, it should have a dedicated seedling propagation farm. For example, the longer the seedling farm has existed, the stronger its strength is proven to be. Agriculture relies on technology and experience, and the longer the time, the more technical experience is accumulated. Grafted walnut saplings are more guaranteed.
2. Fully understand the source of the walnut seedlings. A formal seedling supplier should have a certain planting base, seedling demonstration orchard and scion orchard, so as to ensure the variety and quality of the seedlings.
3. Whether the seedling supplier can sign a contract to guarantee the purity of its variety. Signing a contract that is binding on both parties is of great help in ensuring the purity of the walnut sapling variety.
4. Because there are many companies now, it is dazzling, and many of them operate without a license and belong to illegal enterprises. To deal in seedlings, one must have a seedling production license, a forest tree seedling business license, a business license, etc.
V. Planting time for walnut saplings:
From the "dormant" state of the walnut sapling (that is, the walnut sapling stops growing under the influence of low temperature, and the leaf stalk falls from the trunk) and the "semi-dormant" state (that is, after the Start of Autumn, the walnut sapling stops growing, but because the temperature is slightly higher, the leaf stalk has not yet fallen) until before the walnut sapling sprouts the next year (the second year), all are seasons for planting trees. Or planting can be carried out when the soil temperature is mostly above 15°C. But within this time, the earlier it is planted, the better.
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