For cultivation in winter, cold-resistant, solid-storable, dark-green varieties should be selected. Before sowing, dress the seeds with a new high-fat film (can be mixed with seed coating agents), which can repel underground pests, isolate virus infections, do not affect the germination and swelling function, strengthen the respiratory strength, and increase the germination rate of the seeds. Choose loose, fertile, and deep soil plots to raise seedlings, strengthen fertilizer and water management during the seedling period, water frequently with small water, and apply thin fertilizers frequently to cultivate strong and large seedlings.
For planting in winter, use 3000-5000kg of fully decomposed farmyard manure per mu before planting, and spread it evenly. At the same time, apply quicklime per mu, shallow plough and fine rake, mix fertilizer, soil, and lime evenly, and then prepare the ground.
It should be planted reasonably densely, and sprayed with vegetable Zhuangcailing at the right time, so that the plant stems are thick, the leaves are thick, the leaves are fresh and tender, the plants are lush, and the natural taste is strong. At the same time, it can improve the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce the residual toxicity. In case of low temperature weather, use double or multilayer film to cover to prevent freezing damage. At noon on a sunny day, uncover the shed film, ventilate and reduce the humidity. Before the ridges are closed, the plants shall be watered and fertilized 2 to 3 times, and after the ridges are closed, the urea solution shall be poured once. Prevent pests and diseases.
In the seedling stage of celery, the new high-lipid film is mainly sprayed to prevent the occurrence of diseases. In winter, after the shed is insulated, fumigation is used to prevent and control diseases and insect pests.
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Medical Disposable Stool Sample Container with Spoon
Made mainly of PP and can resist high temperature up to 121℃. Various shape, volume and color design for different specimen
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Clear molded graduation for read and large frosted area for marking and writing.
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Usage: turn the lid of the extractor clockwise; Scrape the feces with the fluted part at the front of the long rod of the lid, and the feces should cover the fluted part; Then insert the sampled lid into the tube (box) and tighten the lid; The method of sending and collecting fecal samples as soon as possible varies according to the purpose of examination. Generally, 3 ~ 5g of fresh and naturally excreted feces should be retained for examination, which should not be too much, as too much will affect the examination results. Anal swabs can be taken if necessary and placed in a dry, clean, non-absorbent covered container with a label for inspection.
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