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What are the methods for applying fertilizer based on seedling condition during the wheat green-up stage?
Spring has come, the earth's warmth rises, wheat awakens from its winter dormancy, and the green in the wheat fields increases. At this time, many farmer friends ask: Does my wheat need fertilizer? What kind of fertilizer is good? How much fertilizer is appropriate? And my answer is: apply fertilizer based on seedling condition. From
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Occurrence of Spring Frost Damage in Wheat and Remedial Measures
Every year in February and March of spring, cold air frequently breaks out and moves southward in the north, with a large temperature drop during the process, and wheat that has jointed too early often suffers frost damage. At this time, for seedlings growing too vigorously, the method of pressing should be adopted to inhibit growth; for weak seedlings, reasonable topdressing should be applied to promote weak ones into strong ones
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Four protections to do well in spring field management of wheat
To ensure high and stable wheat yields, after the beginning of spring, four protections should be emphasized in wheat management. First, prevent waterlogging damage. After the beginning of spring there is generally more rain, and if drainage is poor and soil moisture is too high, waterlogging damage is very likely to occur. Ditches should be cleared and drainage carried out in time, and plant ash should be spread between the rows to loosen
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To manage spring care of late-sown wheat well, it should be carried out according to its characteristics.
Every year there are always some wheat fields sown relatively late. The characteristics of late-sown wheat: First, the tillering period is short. Because sowing is late and emergence is late, there is no tillering period before winter, and the spring tillering period is generally less than 20 days, so the number of tillers per plant is small, and the tillering roots are also few, which is the main reason for slow growth in spring.
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Spring field management for winter wheat: remember these eight key points
Spring is the critical period that determines the number of spikes per mu, the number of grains per spike and grain weight in wheat. Strengthening spring field management according to seedling conditions is the key to achieving high wheat yields. In terms of management, the eight key points of pressing, raking, clearing, topdressing, watering, controlling, preventing and protecting should be implemented as priorities. Pressing: namely early
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How to prevent and control spring soybean virus disease? Detailed explanation of occurrence patterns and control methods
Viral disease is a major disease of spring soybean, causing about 15% yield loss in normal outbreak years and over 50% yield loss in severe outbreak years. 1 Symptoms After spring soybean is infected, the upper leaves first show light yellow-green mottling, and the mesophyll bulges in a blister-like manner along the veins; then the mottling and wrinkling become increasingly severe, the leaves become deformed, the mesophyll protrudes, the leaf margins curl downward, plant growth is clearly stunted, the number of pods decreases, the pods are small and slender, and the pods show deformed symptoms such as flattening and bending. After infected spring soybean matures, the seeds are clearly smaller, and light brown streaks can appear on the seeds.
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Key Technical Points for Spring and Summer Field Management of Navel Orange Orchards
Spring comes early in southern Jiangxi, warm and rainy. From March to June, navel oranges are in the phenological stages of spring shoot growth, flowering and fruit set, and the first and second physiological fruit drop. This is also the dangerous period when more than 10 kinds of pests and diseases, such as citrus flower bud midge, mites, scale insects, tortrix moths, longhorn beetles, anthracnose, resin disease, and canker, rapidly multiply, spread, and proliferate.
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Detailed Explanation of Technical Requirements for Harvesting Fresh Lemons
1. Harvesting of spring flower fruit begins around October 1. 2. Do not irrigate the orchard within 5 days before harvest, do not apply nitrogen fertilizer for 20 days, and do not apply pesticides for 30 days, to ensure that lemons are harvested outside the safe interval period. 3. Do not harvest on overcast or rainy days, in dense fog, or in the morning before the dew has dried. 4. Harvesting
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Key Technical Points for Spring Management of Apricot Trees in Greenhouses
In winter-warm greenhouses, the fruit development period of apricot trees runs from mid-February to the end of April. This period is divided into three main developmental stages. The first stage is the first rapid growth period of the apricot tree and the new shoot growth period, lasting 28-34 days; the second stage is the pit-hardening period, lasting 8-12 days; the third stage is the apricot
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Three Key Measures for Autumn Management of Apricot Trees
The apricot tree is the earliest fruit tree to bloom in spring, and it also leafs out first and then flowers. The nutrients needed for flower organ formation depend on the accumulation in the tree body from the previous autumn, so good autumn management plays a decisive role in the flower organ structure and fruit set the following spring. Autumn management of apricot orchards should
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