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Key Technical Points for Pest Control and Fertilization of Wheat in Winter and Early Spring
When temperatures are relatively low in winter and early spring, pest control and fertilization in wheat fields should pay attention to the following two points: For pest control, to control wheat aphids, red spiders and other pests, spraying omethoate is more effective than dimethoate. This is because the insecticidal efficacy of dimethoate against pests decreases significantly as the temperature drops, while the efficacy of omethoate is less affected by temperature and can exert normal insecticidal action at temperatures below 15°C. Similar to omethoate is fenvalerate; the toxic efficacy of fenvalerate at 15°C is instead stronger than at 25°C. Fertilization: For topdressing, applying ammonium bicarbonate is better than urea. Ammonium bicarbonate
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How to fertilize oats scientifically? A detailed technical Q&A
What are the symptoms of boron deficiency in rapeseed? How should boron fertilizer be applied? Answer: Boron is one of the essential trace elements for the normal growth and development of rapeseed. Rapeseed has a relatively high demand for boron and is also quite sensitive to it. When boron is deficient at the seedling stage, root development is poor, with very few fine roots, branch roots, and root hairs, the root crown becomes swollen, and young leaves lack chlorophyll, turn brown, and may even scorch and drop off. When boron is deficient at the bud and bolting stage, the leaves are dark green and wrinkled, the veins and nearby tissues turn yellow, purple patches appear, and the leaves drop early. At the flowering stage, the flower buds at the top of the inflorescence fade from green to yellow, shrink until they dry up and drop, the petals wrinkle, and the pods
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Garlic management has its subtleties, and the technical points must be clearly explained
1. What is the current management focus? Garlic has now grown 7-9 leaves, and the growth period has entered the late stage of scale bud and flower bud differentiation. This stage is dominated by leaf growth and is a critical period for garlic growth and development. The root system gradually expands and shifts from vertical growth to horizontal growth, root growth strengthens, and the accumulation of nutrients accelerates; this is the period that lays the foundation for the growth of garlic scapes and garlic bulbs. Due to the earlier mother bulb degeneration, together with the long duration of cold spring weather this year and delayed watering and topdressing, the plants show dry tips and physiological dry leaves because of a nutrient gap, with grayish, dull leaf color and poor growth
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The key "three waterings and three fertilizations" technical points for garlic cultivation
Water and fertilizer management after garlic turns green is the key to a bumper garlic harvest. As the weather warms up, water and fertilizer uptake gradually increases after greening, especially during the bolt-bearing stage and the bulb swelling stage, which are the peak periods of water and fertilizer demand for garlic. Therefore, throughout the entire growth period of garlic, timely watering and topdressing should be carried out according to soil moisture conditions and soil fertility and seedling conditions, with special emphasis on doing well the "three waterings" and "three fertilizations." 1. Water the greening water well and apply the greening fertilizer well. By the Spring Equinox, the garlic seedlings begin to turn green and grow. Because the early spring soil temperature is low, it is best to water the greening water at noon
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Key Technical Points for High-Yield and High-Quality Cultivation of Garlic with Plastic Mulching
Garlic is currently one of the main cultivated vegetables in the Laixi area, with a cultivation area of over 200,000 mu over the years. To increase the economic income of local garlic farmers, since 1998 we have conducted experimental research and extension of large-scale high-yield and high-quality garlic cultivation technology with plastic mulching. In the demonstration park, the average yield per mu is 1,000 kg of garlic scapes and 1,000 kg of garlic bulbs, with the highest yield per mu exceeding 1,250 kg. The garlic scapes produced are green and tender, and the garlic bulbs are plump, white, strongly pungent, and highly viscous, with strong market competitiveness. They are exported in large quantities, and the economic benefits are considerable. The main techniques are summarized below.
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Detailed Explanation of Processing Methods and Technical Points for Allicin
Allicin is a volatile oily substance extracted from the spherical bulbs of garlic, a mixture of diallyl trisulfide, diallyl disulfide, and methyl allyl disulfide, among others. The trisulfide has a strong inhibitory and killing effect on pathogenic microorganisms, and the disulfide also has certain antibacterial and bactericidal effects. 1. Material preparation. Select mature, dry garlic heads free from insect damage and mildew, remove the stems, separate the cloves, peel off the inner skin, rinse with clean water, and remove impurities and substandard garlic cloves. 2. Crushing and drying. Use a grinder to crush the garlic
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Control Methods and Technical Key Points for the Chestnut Gall Wasp
The chestnut gall wasp Dryocosmus kuriphilus Yasumatsu belongs to the order Hymenoptera, family Cynipidae, and is also known as the chestnut tumor wasp. It is widely distributed in chestnut-growing areas, where its larvae damage the new buds of chestnut trees. When chestnut buds sprout in spring, the damaged buds fail to sprout and gradually swell to form galls, sometimes with deformed small leaves growing on the galls. In severe cases, the tree vigor weakens and branches or the whole tree may die. Morphology: adult body length 2.5-3 mm; head and abdomen dark brown;
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Detailed Explanation of Lily Cultivation Methods and Key Technical Points
Climate and Soil The tiger lily prefers a sunny, mild and relatively dry climate. It is cold-resistant and drought-tolerant, and dislikes extreme heat and excessive rain. It has low requirements for soil; it is best to plant it in a cool, dry, sunny environment and in a high, dry, sunny, well-drained sandy loam. Damp, low-lying land is not suitable for planting. Continuous cropping is avoided. Land preparation is carried out in summer: plow the land, apply base fertilizer, form flat beds about 1.2 m wide, and dig drainage ditches around them. Propagation methods mainly use scales and small bulbs. (1) Scale propagation: select large, healthy bulbs free of pests and diseases, and use a bamboo
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Harvesting and Processing Methods and Technical Key Points for Lilies
In the autumn of the second year after transplanting, when the stems and leaves wither, choose a sunny day to dig them up, remove the stems and leaves, use the large bulbs for medicinal purposes and the small bulbs as planting stock. Separate the large bulbs into scales, place them separately according to large, medium and small sizes, wash off the soil, drain off the water droplets, then put them into water and blanch briefly, about 10 minutes for large scales and 5-7 minutes for small scales, remove them, rinse off the mucus in clear water, spread them out on mats to dry, and when they are 90% dry, fumigate them with sulfur, then sun-dry them until completely dry. The yield is about 200 kg of dried product per mu.
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Detailed Explanation of Key Technical Points for Field Cultivation and Management of Lilies
When carrying out field cultivation, the following aspects of work should be done well. (1) Select good varieties according to the cultivation purpose and local climate conditions, soil, and other factors. (2) Choose a suitable plot: select sloping land with high and dry terrain (with a gentle slope) or flat land, with loose, deep soil and medium organic matter content, and the plot should have good drainage capacity. For plots prone to drought, it is better to have a certain irrigation capacity. In addition, lilies are unsuitable for continuous cropping; a plot where lilies have been grown can only be planted with lilies again after 3-5 years, and the previous crop is best
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