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How to manage greenhouse tomatoes after frost damage? Practical technical points
In greenhouse tomato cultivation, abnormal weather changes often cause frost damage of varying degrees. In lightly frozen plants, growth stalls, the plants turn yellow, and some, after resuming growth, become short with small leaves and short internodes, showing the flower-topped phenomenon, with low yield and reduced quality. For severely frozen plants, if remedial measures are not taken in time, they cannot resume growth and will wither...
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Correct Fertilization Methods and Technical Key Points for Pear Trees
I. Fertilizer amount. Generally speaking, producing 100 kg of pear fruit requires 0.47 kg of pure nitrogen, 0.23 kg of pure phosphorus, and 0.48 kg of pure potassium, with a nitrogen, phosphorus, and potassium ratio of 1:0.5:1. If calculated at a yield of 2500 kg of pears per mu, then each mu requires 11.75 kg of nitrogen, 5.75 kg of phosphorus, and 12 kg of potassium. In actual production, it can be based on...
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Detailed Explanation of Control Methods and Technical Key Points for Pear Scab
In the early stage of fruit infection, pale yellow spots appear; after the lesions expand, they become slightly sunken and develop black mold, after which the lesions become corky and cracking appears. Control measures: in the early stage of fruit infection by pear scab, the pesticides to spray include 1:2:200 Bordeaux mixture; 70% thiophanate-methyl wettable powder at 800-1000 times dilution; 50% carbendazim wettable...
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How to raise seedlings for autumn-winter tomatoes? Key technical points explained
1. Seedbed preparation: The seedling-raising period for autumn-winter tomatoes in a solar greenhouse coincides with the hot, rainy season. The seedbed should be capable of preventing rain and waterlogging, providing ventilation, and lowering temperature. Seedlings must be raised under film-covered conditions so they can adapt to greenhouse conditions. It is best to choose a dry site with good ventilation and set up a 1.5-2 m high arched...
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Key Technical Points for High-Yield Fertilization Management of Pear Trees
About one month before pear fruit ripens, the growth rate accelerates, which is called the fruit expansion stage. Topdressing at this time can improve photosynthetic efficiency, promote nutrient accumulation, and benefit fruit expansion and flower bud differentiation. This topdressing can both increase the yield of the current year and lay the foundation for fruiting in the following year. 525 Shandong Fruit Network The fertilization period is generally at the fruit...
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Detailed Explanation of Key Technical Points for High-Yield Ginger Cultivation and Management
I. Pre-planting Preparation 1. Fine land preparation and adequate base fertilizer. It is advisable to choose plots with fertile soil, good irrigation conditions, and no ginger blast disease, and to avoid continuous cropping as much as possible. On the basis of winter plowing, carry out fine land preparation early in spring, so that the soil has no visible or hidden clods and is loose on top and firm below. Increase the application of organic fertilizer, using high-quality chicken manure, disease-free residue-free barnyard manure, cake fertilizer, and plant ash in combination, and broadcast 4 cubic meters of high-quality decomposed chicken manure or 5,000-10,000 kg of high-quality barnyard manure as base fertilizer in combination with land preparation. In high-fertility and high-water plots, open furrows at a row spacing of 60-65 cm for sowing, and apply 100 kg of soybean cake, 50 kg of ternary compound fertilizer, 50 kg of potassium sulfate, 2 kg of zinc fertilizer, and 1 kg of boron fertilizer in the furrows as seed fertilizer.
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Key Technical Points and Precautions for Ginger Management After Autumn
After the Beginning of Autumn, the weather turns cool and the ginger rhizomes enter a period of rapid expansion. During this period, the demand for water and fertilizer is relatively high, and pests and diseases occur more frequently, making it a critical time for control. Strengthening mid-to-late stage management of ginger is very important. The relevant technical points are introduced below. 1. Watering: Ginger prefers moist conditions and is not drought-tolerant...
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Detailed Explanation of Key Technical Points for Renovating Low-Yield Pomegranate Orchards
I. Strengthen soil, fertilizer and water management. In summer, dig over the tree basin, rake it level, then cover the tree basin with a 20 cm thick layer of grass or wheat straw, press a small amount of soil on top, and turn it under on the spot in early spring of the following year. From after harvest to early winter, apply base fertilizer by the trench method, with trenches 30-35 cm deep, applying 3000 kg of high-quality farmyard manure, 3 kg of superphosphate, and ternary compound...
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A detailed explanation of the planting methods and key technical points for canistel
Planting methods for canistel
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Key Technical Points for Pest and Disease Control in Citrus in Summer and Autumn
1. Whitefly: Both adults and larvae can harm citrus leaves and fruits, sucking sap with piercing-sucking mouthparts and secreting large amounts of honeydew that contaminates leaves and fruits, causing sooty mold. Because whitefly reproduces quickly, has many hosts, and spreads easily, large-scale coordinated control is needed to achieve good results. (1) Control timing: when...
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