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Control Methods and Technical Key Points for Apple Little Leaf Disease
Apple little leaf disease occurs mostly in orchards with poor soil and good permeability. Because of low zinc content, soluble zinc salts leach away and the disease becomes severe; frequent watering and rainfall cause large losses of soluble zinc; excessive nitrogen fertilizer use increases the tree's zinc requirement; in saline-alkali soil the pH
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What are the key points of apple autumn pruning techniques?
I. Autumn physiological characteristics: 1. In the late stage of new shoot nutrition (August to November), leaf photosynthates are transported downward in large quantities into buds, fruits, branches and trunks, and roots. 2. In the fruit ripening stage, including early, mid and late maturing varieties. 3. In the late stage of flower bud differentiation,
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Detailed Explanation of Key Technical Points for Soil, Fertilizer and Water Management in Apple Orchards
1. Soil management For the soil management of mature fruit tree orchards, the clear-root method or tree-disk mulching method should be adopted. From spring to before the rainy season each year, after combining fertilization and irrigation, carry out intertillage and loosening of the soil. Weed 1-2 times to keep the soil loose and free of weed growth. In the rainy season, cut grass and cover the tree disk 1-2 times. In autumn, after the fruit trees shed their leaves, carry out autumn plowing. Use an iron shovel to deep-turn the tree disk to 15-20 cm, then apply additional organic fertilizer. Apply topdressing three times, respectively before and after sprouting, after flower drop, and during the fruit enlargement stage, using nitrogen, phosphorus and potassium elements in combination. The ratio is 1:0.6:1.5.
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Detailed Explanation of Key Techniques for Autumn Management of Apple Trees
The peak period of flower bud differentiation in apple trees occurs in autumn. Doing a good job of autumn management of apple trees can lay a solid foundation for high, stable and high-quality yields in the following year. Fertilizer and water management For non-bearing trees, 0.15-0.25 kg of diammonium phosphate can be applied per tree; for large bearing trees, according to the planned yield for the following year, 0.7 kg of pure nitrogen and 0.7 kg of available phosphorus can be applied per 100 kg of fruit. Topdressing for young trees can significantly increase the sprouting rate in the following year. For large trees in full bearing period, applying fertilizer in autumn year after year, under the same amount and types of fertilizer, compared with topdressing in early summer, can increase the yield by about 50 kg per tree.
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Detailed Explanation of Key Points of Autumn Fertilization Techniques in Apple Orchards
1. Fertilization principles: On the premise of increasing the application of organic fertilizer and building up soil fertility, emphasize potassium, increase nitrogen, stabilize phosphorus, and supplement micronutrients, and vigorously promote soil-testing-based formula fertilization. 2. Fertilization types: (1) Organic fertilizers mainly include: manure and urine, barnyard manure, compost, cake fertilizer, straw,
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What are the key techniques for high-yield licorice cultivation?
1. Soil selection: Choose sandy soil and sandy loam soil with deep soil layers, good drainage, high terrain, and relatively high calcium content. Wasteland and barren slopes with slightly alkaline soil and a pH between 7 and 8.5 can all be cultivated. Plots with low-lying terrain and heavy clay soil must not be planted. 2. Variety selection
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Key Field Management Techniques for Licorice Cultivation
1. Licorice begins to emerge about 15 days after planting. After the seedlings are established, apply 15 kg of urea per mu along with irrigation to promote seedling growth. From late May to early June, open furrows and apply 30 kg of diammonium phosphate per mu, then irrigate. During this period, fertilize and irrigate scientifically to ensure vigorous seedling growth
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Detailed Guide to Licorice Seedling Cultivation: From Sowing to Seedling-Stage Management
1. The seedling bed should be chosen in a plot of deep, fertile, loose humus soil or sandy loam. Apply 2000 kg of farmyard manure, 25 kg of superphosphate, and 10 kg of potassium sulfate per mu as base fertilizer, plow deeper than 40 cm, level and harrow fine, and make flat beds 100 cm wide for later use.
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Detailed Explanation of Licorice Propagation Methods and Cultivation Techniques
Licorice propagation has three methods: seed propagation, rhizome propagation and division propagation. 1. Site selection and land preparation: Sandy soil and loose red loam soil are suitable; apply 2500 kg of farmyard manure per 667 sq m, deep plow 40-50 cm in autumn, harrow fine and level, and make high ridges 40-50 cm wide with furrows 30-35 cm wide.
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Key Points of Artificial Cultivation Techniques for Wheat-Scutellaria baicalensis Continuous Cropping
The medicinal plant Scutellaria baicalensis (Baikal skullcap) is a perennial herb of the Lamiaceae family. Its root is used as medicine and has functions such as clearing heat and drying dampness, detoxifying, and promoting bile flow. In artificial cultivation of Scutellaria baicalensis, adopting a wheat-Scutellaria baicalensis continuous cropping method not only reasonably arranges the crop rotation but also improves economic returns, making it particularly worth planting in mountainous and hilly
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