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Spring Pruning Methods and Technical Key Points for Densely Planted Jujube Trees
The small canopy open-center layered form has a trunk height of 80-90 cm. Suppress the secondary branches on the trunk and promote the development of 3-4 jujube heads (main shoots), so that the topmost jujube head extends upward to become the trunk extension branch, and the 2-3 jujube heads below are trained as main branches. In the second year, cut back the trunk branch leaving about 60 cm, and remove the
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Scientific Fertilization Methods and Technical Points for Plum Cultivation
I. Fertilizer Types 1. Base fertilizer: Base fertilizer is a fertilizer that can supply plum trees with various nutrients over a relatively long period. It is generally dominated by slow-release farmyard manure, such as compost, barnyard manure, crop straw, green manure, fallen leaves, etc. An appropriate amount of quick-acting nitrogen fertilizer can be added to the base fertilizer to meet the large amount of nitrogen needed by plum trees during early spring germination and flowering.
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Plum tree training and pruning methods and key technical points
① Training. The tree form can be natural open-center, multi-main-branch natural form, or Y-shape. For young trees, the trunk height is set at 30-50 cm. After sprouting, keep 5-6 buds as main branches; when the main branches are 50-60 cm long, leave 40 cm and pinch off the tips. In August, keep 2-3 permanent main branches, and pull the extra 2-3 main branches apart to make them droop, so they can bloom and bear fruit the following year. Later, as appropriate, train them into medium-to-large fruiting branch groups.
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How to prevent frost damage in plum trees? Key technical points for frost prevention when growing plum trees
Frost injury and freeze damage refer to the phenomenon in which the soil and plant surface temperatures drop to 0°C or below 0°C for a short time at night during the growing season, or when frost occurs, causing damage to the young and tender parts of fruit trees. In China, the average annual area affected by frost damage reaches 340,000 km2, and in the worst year it reached 7
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Key Technical Points for Raising Hami Melon Seedlings and Planting in Autumn
1. Sowing In the Shanghai region, raising Hami melon seedlings in autumn is best done at the end of July and the beginning of August, choosing high-yield, high-quality Hami melon varieties suitable for cultivation in the Shanghai region. First dry the Hami melon seeds in a constant-temperature chamber at 40°C for 24 hours, then keep the temperature constant at a high temperature of 70°C for dry-heat sterilization
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Sharing Experience and Key Technical Points of Soilless Cultivation of Hami Melon
I. Basic construction: 1. Sand ridge: According to the width of the greenhouse, dig a groove with a slope (preferably one that allows water to flow), an inverted triangle, with a top width of about 30 cm, a depth of 40 cm, and an iron mesh laid 20 or 25 cm from the bottom of the ditch. On top of the iron mesh, lay a plastic mesh (mesh size should be such that sand does not leak through
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Control Methods and Technical Key Points for Root Rot Disease in Papaya Seedlings
Papaya root rot disease is also called papaya root rot. Symptoms: The disease mainly affects the root collar and roots, and seedlings during the nursery period and shortly after planting are more susceptible. It is especially likely when the groundwater level in the nursery site and cultivation site is relatively high or poor drainage causes waterlogging, and when the soil is highly clayey. The plant
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Key Technical Points for Pest and Disease Control During the Cotton Seedling Stage
Due to the influence of ecological conditions, meteorological factors and so on, pests and diseases during the cotton seedling stage are characterized by many species, rapid development and severe damage, often causing missing seedlings and broken rows in cotton fields, and in severe cases, large areas of death. The main diseases that occur include black root rot, red rot, damping-off, anthracnose
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How to Achieve Full Seedling Emergence in a Single Sowing of Cotton? Key Technical Points Explained
1. Variety selection: Choose hybrid varieties with high yield, good quality, great potential and strong stress resistance, such as Hanza 429 and Hanza 301; or use conventional varieties such as Ji 228 and Han 7860. 2. Seed treatment: This includes sunning the seeds before sowing and germination testing. Sun the seeds for 3-5 days before sowing to promote after-ripening, so as to improve the seed germination rate and germination vigor. Do not sun the seeds on concrete or asphalt surfaces. Randomly take 100 or 200 seeds and carry out a germination rate test to determine the sowing rate.
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What are the key technical points for cotton management after autumn
In autumn, cotton growth shifts to the late growth stage of boll opening and completing the development of autumn bolls. During this period, the focus should be on nurturing the roots and protecting the leaves, using scientific management methods to promote robust cotton plant growth, prevent premature aging as well as excessive vegetative growth and late maturity and rotten bolls, and strive for a bumper cotton harvest. Specific management
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