What issues should be noted in walnut tree cultivation?
What issues should be noted in walnut tree cultivation? Please provide an introduction. The following issues should be noted in walnut tree cultivation: Walnuts are widely distributed naturally in China, from southern Liaoning in the north, to northern Fujian in the south, to Shandong and Zhejiang in the east, and to Qinghai, ** and even Sichuan in the west. They can grow normally at altitudes of 500m-2500m...
What issues should be noted in walnut tree cultivation? Please provide an introduction.
The following issues should be noted in walnut tree cultivation:
Walnuts are widely distributed naturally in China, from southern Liaoning in the north, to northern Fujian in the south, to Shandong and Zhejiang in the east, and to Qinghai, ** and even Sichuan in the west. They can grow normally at altitudes of 500m-2500m. In our province, at altitudes between 500m-1000m, walnuts grow well.
Walnuts like light, fertilizer and water, and have well-developed root systems. Therefore, when choosing a walnut orchard site, you should choose a place with good soil fertility, a soil layer more than 1.5m deep, a slope of less than 25 degrees, shelter from wind and exposure to sun, good air circulation, and sufficient sunlight.
The recommended planting density for walnuts: for early-fruiting dwarf short-branch varieties, the plant-row spacing is 3.5m x 5m or 4m x 6m, with 38-28 trees per mu; for late-fruiting vigorous varieties, the plant-row spacing is 5m x 7m or 6m x 8m, with 19-14 trees per mu.
Problems found in walnut seedling cultivation and planting and their solutions
There are many walnut varieties with different characteristics. To cultivate excellent varieties, you must first understand the propagation characteristics and advantages of walnuts, and master the various key points and techniques of grafting, actively cultivate excellent varieties, and enhance their adaptability and resistance to pests and diseases.
1. Solve the problem of eliminating inferior walnuts and selecting superior ones to increase economic benefits.
Walnuts are mostly cross-pollinated, with mixed varieties and great differences in quality. To obtain excellent varieties with stable and high yields, early fruiting and strong resistance, the best way is grafting for seedling propagation.
2. Truly solve the problem of seedling purity.
Due to the implementation of the Grain for Green Project, large-scale walnut cultivation has caused a shortage of walnut seedlings. Therefore, in seedling grafting, phenomena such as "one-cut" fake grafting and grafting of inferior varieties have appeared, passing fakes off as genuine and shoddy goods as fine ones, causing extremely serious consequences. Therefore, it is necessary to strengthen learning, actively practice, strive to master the techniques, and improve the ability to identify seedlings.
Several measures that should be taken in developing walnut planting
1. Increase the intensity of popular science publicity so that farmers fully understand the relevant knowledge of walnut seedling cultivation and planting.
2. Increase the speed of cultivating superior walnut seedlings and strengthen comprehensive management after planting. As the area of superior walnut cultivation expands, the supply of superior scions will increase accordingly.
3. Popularize grafting techniques, do a good job in grafting technique training, mobilize the masses to vigorously grow seedlings, improve seedling yield and quality, and reduce the price of superior grafted walnut seedlings as soon as possible, so as to increase farmers' affordability in developing walnuts.
4. Forestry administrative law enforcement departments should intensify efforts to crack down on fake and inferior seedlings and seeds, severely crack down on illegal persons who manufacture and sell fake seedlings, purify the seedling market, and let farmers who plant walnut saplings truly buy genuine superior walnut seedlings at fair prices, reducing unnecessary losses. Only in this way can the ancient economic tree species of walnut develop healthily in a scientific, orderly, reasonable and efficient direction.
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