1, Qinggou drain. Rapeseed field has been opened "Sangou" to clear the gully drainage as soon as possible, unopened drainage should be combined with drainage to open the "three ditch", the general ditch ditch 30-40 cm deep, gutter 40-50 cm, and do ditch Connected.
2, check seedlings fill shortage. Once the weather is clear, check the seedlings as soon as possible. With large seedlings, strong seedlings make up the tree, live rape can also be combined with supplementary trees to carry out, Dingmiao, remove weak seedlings and diseased seedlings. When growing trees, the seedlings of the same variety and similar sowing date should be used to avoid inconsistent maturity due to different growth periods.
3, a suitable amount of fertilizer. For weak seedlings and stiff seedlings, after removing the accumulated water, 1,000-1,500 kilograms of landfilled fertilizer is applied per mu, and 2-3 kilograms of urea and 5-10 kilograms of phosphate fertilizer are mixed. For the long seedlings, 500-1000 kg of organic fertilizer can be applied on the surface, and the field with insufficient base fertilizer should be reused.
4, earthworms roots. Rapeseed seedlings are poorly seedlings, and their nutrition accumulation is low. They are vulnerable to freezing damage. Fine roots should be used. The roots and necks exposed on the ground, together with the petioles, should be buried with fine soil so that the soil can be in close contact with the root neck. For weak seedlings, thin soil should be used to cover the seedlings, only the heart of the leaves, after the winter to promote soil growth.
5, prevention and treatment of pests. The seedling rapeseed cells are loose, fragile and susceptible to pests such as aphids, cabbage caterpillars, and virus diseases. They should be treated as early as possible. It is found that pests can be treated with 20% of alfalfa pine 1000-1400 times liquid, while withered, Yellow, sick, dead leaves, to prevent the spread of disease.
Most of the Fluorine-Containing Phenylamine products are a light yellow oily liquid, relatively high density, insoluble in water. Most of them are used in the manufacturing of pesticides and dye intermediates, small part of them can be used as an analytical reagent. The steam or smoke of fluorine-Containing Phenylamine series is irritated to eyes, mucous membranes and upper respiratory. Vapor and air can form explosive mixtures, in case of fire, high-heat combustion caused the explosion. And oxidant may react. Decomposition by high fever and emit toxic gases. In case of high fever, increased pressure within containers, cracking and the risk of explosion. Protective measures must be done carefully during product storage. Once the fire occurred, it must be immediately evacuated from air leakage,personnel to a safe area, prohibit access to the contaminated area. Recommended emergency personnel wearing self-contained breathing apparatus and wear chemical protective clothing. In the ambulance personnel to ensure proper safety measures, immediately use foam, carbon dioxide, dry, sandy soil to put out a fire.
Fluorine-Containing Phenylamine
Containing Phenylamine,2-Bromo-4-Methoxy-Phenylamine,5-Fluoro-2-Iodoaniline
Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com