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Detailed Explanation of the Key Technical Points of the "One Spray, Three Preventions" in the Late Stage of Wheat
I. Disease Occurrence Pattern Wheat rosette dwarf disease is a viral disease spread by the vector Laodelphax striatellus (small brown planthopper). The small brown planthopper has two peak periods of virus transmission and infection on wheat: the first peak period is after wheat emergence, and the second peak period is after wheat turns green again. As the temperature gradually rises, the overwintering generation of the small brown planthopper begins to move and feed on wheat seedlings, spreading...
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Key Technical Points and Detailed Operation Methods for Apricot Tree Propagation
In recent years, as the market for major fruits such as apples and pears has gradually become saturated, the market potential for minor fruits is relatively large, especially with promising prospects for fresh-eating apricots and kernel apricots. Apricot trees are deeply favored by fruit growers for their strong adaptability, ease of cultivation, low investment and quick returns. Most rural areas use seedling propagation, whose offspring vary greatly and do not easily...
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Detailed Explanation of Key Technical Points for Soil Testing and Formula Fertilization of Chestnut Trees
1. Main branch balancing (taking the three-main-branch open-center shape as an example). The main branches are the primary framework supporting all the branches. Before pruning, first carefully observe the orientation and growth vigor of the three main branches, have a clear picture in mind, and then make adjustments. For strong and vigorous main branches (with a large thickness ratio), strongly pull them to a wide angle, or use a side branch to replace the main branch extension head, combined with ring barking...
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Persimmon Tree Disease Prevention and Control Methods and Key Technical Points
Fertilizer and water management during the flowering period in an ecological persimmon orchard is an indispensable specific measure. Its purpose is to push the persimmon tree's growth rhythm to a peak. By emphasizing nutrient supply, it achieves the best effect in preserving flowers and fruit. In this way, all inappropriate means and measures in the management of the persimmon orchard during the flowering period are eliminated. It not only effectively...
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Key Technical Points for Foliar Topdressing After Persimmon Trees Set Fruit
Timely fertilization: When the fruit's transverse diameter reaches 4-5 cm and when the fruit size has basically become fixed, apply fruit-swelling fertilizer and pre-harvest fertilizer, mainly with quick-acting, quick-dissolving nitrogen-phosphorus-potassium fertilizer. For bearing trees over five years old, apply 1.5-2 kg of urea and 0.75-1 kg of potassium dihydrogen phosphate per tree, or 1-1.5 kg of nitrogen-phosphorus-potassium compound fertilizer, broadcast after rain, or...
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Wheat Pest and Disease Control Methods and Key Technical Points
Spider Mites in Wheat [Distribution and Damage] There are mainly two species of spider mites in wheat, the winter grain mite [Penthaleus major (Duges)] and the brown wheat mite [Petrobia latens (Muller)]. The former belongs to the family Penthaleidae, order Acariformes, class Arachnida; the latter belongs to the family Tetranychidae. Both are distributed in wheat-growing regions across the country. In the north, the brown wheat mite predominates, while in the south...
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Papaya Planting, Cultivation Methods and Technical Key Points
Planting and Cultivation 1. Site selection and land preparation: Choose a sunny, fertile, moist and well-drained location for planting. It can also be planted at field edges and corners, on hillsides, and around houses. For block planting, dig holes at a spacing of 1 m x 2 m, and apply 5-10 kg of farmyard manure mixed with soil in each hole as base fertilizer. Seedling nursery land...
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Control Methods and Technical Key Points for Papaya Brown Rot
Generally planted in rows in the ground, but can also be grown as potted specimen plants. The best planting time is before bud break in early spring or after leaf fall in early winter. When lifting seedlings from the nursery, keeping the root system intact is one of the keys to successful planting. Generally, large seedlings for planting should be kept with a soil ball, while small seedlings should retain some native soil depending on the situation. After planting, the seedlings should be...
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Methods and Technical Key Points for Controlling Root Rot in Papaya Seedlings
Papaya is a subtropical crop, propagated by seedlings and transplanting. Analysis suggests the main causes of root rot at the seedling stage are: water accumulation in the seedbed after rain, excessively high fertilizer concentration during the seedling stage, nematode invasion of the roots, and infection by root rot pathogens. Control measures: 1. The papaya root system carries out respiration in the soil. Under oxygen-deficient conditions, anaerobic respiration...
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Detailed Explanation of Key Technical Points for Flower and Fruit Management in Mango Orchards
(1) Use of plant growth regulators: When using plant growth regulators, the specified concentration, method of application and timing must be followed, and plant growth regulators that have not been approved, registered and produced by the state should not be used. For plant growth regulators used to control shoots and promote flowering, the recommended concentration is ethephon 200-3...
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