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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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Key Technical Points for Scion Preparation in Conventional Walnut Propagation
1. Source of scions - Select superior varieties as mother trees for scion collection and establish a scion orchard. Cutting scions from a scion orchard ensures variety purity. Scion mother trees should be of pure variety, grow vigorously, and be free of pests and diseases. After collecting scions, they must be labeled to prevent mixing, because
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Key Technical Points for Seedling Management During the Walnut Nursery Stage
Walnut seeds begin to sprout about 20 days after spring sowing and emerge completely by around 40 days. During this period, check the emergence of seedlings every day. Once the seedlings emerge from the soil, promptly cut open the plastic film with a small knife to prevent scalding the seedlings, and at the same time cover the cut film firmly with moist soil. Strengthening management during the seedling stage is the key to cultivating strong seedlings.
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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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A Detailed Explanation of the Basic Operational Procedure for Walnut Tissue Culture Propagation
Tissue culture propagation has high reproductive efficiency, is unaffected by seasons and disastrous weather, allows year-round propagation, and the material can multiply in geometric progression, giving a fast rate of seedling multiplication. The culture technique is simple and easy to perform, convenient to manage, and the culture conditions can be controlled artificially, which facilitates automated management.
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What are the precautions for walnut tissue culture
(1) Contamination The tissue culture process requires a relatively highly sterile environment. During tissue culture, it is often infected by microorganisms such as fungi and bacteria, which multiply in the culture vessels and affect the normal growth and development of the culture material. At every step of culturing, attention must be paid to adequate disinfection and sterilization. Inoculation tools, inoculation materials, and operators must all be strictly sterilized as required before inoculation operations, including used inoculation bottles, bottle stoppers, and so on, which must be carefully cleaned and sterilized before they can be used again. The inoculation room, culture room, and ultra-clean workbench should be regularly fumigated with formalin and frequently sterilized with ultraviolet lamp irradiation.
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How are walnut saplings lifted, graded and stored?
In regions with cold winters, saplings are lifted from the nursery after leaf fall and before the ground freezes. Lifting saplings from the nursery is an important step in raising plants. A plan for leaving the nursery should be made according to needs, and saplings should be lifted in batches according to variety, planting needs and sales situation, to avoid mixing varieties during lifting, storage and transport.
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Key Points for Choosing a Walnut Orchard Site: How to Select a Good Plot for Orchard Establishment
The selection of a walnut orchard site is directly related to the success or failure of pollution-free walnut production and the level of its economic benefits. To achieve the goals of early fruiting, high quality, high yield, high efficiency and pollution-free production as much as possible, a site should be chosen that is flat, has deep soil layers, fertile soil, is sheltered from the wind and facing the sun, and has convenient transportation.
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What specific contents does the planning of a walnut orchard include?
Because walnut has a wide range of adaptation, the selection of the orchard site is not very strict, and the planning of the orchard is also relatively extensive. As long as scientific planning is carried out according to the topography and climate characteristics of a certain region, the unfavorable factors of establishing the orchard can be weakened or eliminated, which is beneficial to future production and operation.
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