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Selection Methods and Key Points for Walnut Rootstock Types in Walnut Seedling Cultivation
Currently, the process of improving walnut varieties in China is relatively fast, and most regions have already achieved the use of grafting methods to propagate seedlings. The commonly used rootstock types include 5 kinds: common walnut, iron walnut, wild walnut, Manchurian walnut, and Chinese wingnut. As shown in the picture: walnut. 1. Common walnut. In China
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Pre-sowing Treatment Methods and Technical Points for Walnut Seeds
Seeds kept in dry storage must be treated with appropriate measures before sowing to promote germination and shorten the sprouting period. Seeds after sand storage can be sown directly, but sowing after sprouting is more effective. (1) Cold water soaking Before spring sowing, soak the dry-stored seeds in cold water
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What are the sowing methods for walnut cultivation?
(1) Land preparation To make grafting operations convenient, the wide-narrow row method is commonly used when growing rootstock seedlings, with wide rows at 60 cm, narrow rows at 40 cm, and plant spacing of 15-2,0 cm. If only seedling trees are to be grown without grafting, they can be planted somewhat more densely, with plant and row spacing of 2,0 cm x 40 cm. (2) Irrigation Before sowing, water once
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Management Methods and Technical Points for Walnut Seedlings After Grafting
From grafting in May and June to the grafted seedlings leaving the nursery in October, there are only a few short months. In order to ensure the robust growth of grafted seedlings and cultivate high-grade nursery stock, management needs to be strengthened. 1. Check survival and fill in grafts. About 1 week after walnut bud grafting, check whether the graft has survived. Fresh and plump grafted buds indicate successful grafting, while blackened grafted buds indicate failure, and timely re-grafting should be carried out.
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Methods and Recommendations for Implementing Soil and Water Conservation Engineering in Walnut Orchards
When establishing walnut orchards on mountainous and hilly land that is dry and receives little rain, with thin soil layers, the original vegetation may be destroyed, and coupled with unreasonable cultivation, this can easily cause soil erosion. Especially during the rainy season, excessive rainfall forms surface runoff that washes away the fertile topsoil and organic matter.
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What are the main pruning methods for walnut trees?
1. Heading back. Heading back refers to cutting off part of a one-year-old branch. On young walnut trees, the method of heading back vigorous vegetative branches is commonly used to increase the number of branches. The targets for heading back are vigorously growing vegetative branches sprouting from first-order and second-order lateral branches; the purpose is to promote new shoot growth and increase branching.
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Detailed Explanation of Walnut Tree Pruning Techniques and Methods
Walnuts mostly bear fruit on the terminal buds of branches. Except to encourage branching, walnut branches generally should not be headed back, otherwise fruiting will be affected. Overcrowded branches and dead branches can be thinned out. Weak branches and branches in sparse areas of the inner canopy can be heavily headed back or cut back to encourage new growth.
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Pruning Methods for Different Types of Branches on Walnut Trees
1. Pruning of skeletal branches: Promptly retract crossing skeletal branches. For overly weak skeletal branches, retract them to well-grown lateral branches growing obliquely upward, so as to raise the angle of the extension branch. For trees reaching a height of about 3.5 m, promptly drop the head. 2. Training and renewal of bearing branch groups: Walnut
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Pruning Methods for Neglected Walnut Trees in Production Areas
In China's walnut production areas, many trees are managed extensively, harvested but not tended, rarely pruned, and left to grow naturally, becoming neglected trees. 1. Structural characteristics of neglected trees The general characteristics of such trees are numerous scaffold branches, disordered tree shape, bare inner canopy, dead small branches, poor ventilation and light penetration
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The significance and methods of thinning male flowers (male flower thinning) on walnut trees
Walnut trees produce a large number of male flowers, far more than needed for pollination, and the development of male flower buds consumes large amounts of water, sugars, amino acids and so on. Removing excess male flower buds from walnut trees is called male flower thinning. Thinning male flowers can save large amounts of water and nutrients for the development of female flowers, thereby
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