Wheat winter management to do four defenses
Winter field management of frost-proof winter wheat field should adhere to local conditions, classification guidance, in particular, to do a good job of antifreeze work, increase wheat resistance, lay a good foundation for the next year's high yield. First, the quality of the whole field is poor, and the large-scale hanging seedlings of the field can be applied with soil-fertilizer to cultivate soil, so as to play the role of freezing and seedling protection. Second, pouring frozen water, late sowing, seedlings deviation of the wheat field in time to cultivating loose soil, remove the hardening, increase the temperature, promote the weak and strong. Drought-free autumn dry climate, winter weather is generally more serious drought, most of the wheat is short of wheat. Therefore, when the temperature rises, when the night is frozen, it is necessary to water in time to promote the growth of roots in the underground, and ensure the preservation of roots. One of Wang Wang's prosperous seedlings is the seedlings that are sown early and are often weak after prosperous. They will be frostbite when they encounter a constant low temperature in winter. They should be repressed in the morning on a sunny day to suppress the growth of the main stems and scorpions of the young wheat seedlings. Do not repress if frost or dew is present to avoid injury. After the repression, it is necessary to timely plunge and pour winter water, and apply 15 kg of ammonium bicarbonate per acre. If necessary, apply a 0.2% to 0.3% solution of chlormethorine to inhibit growth and prevent freezing injury. The second is that the seedlings of Wangmiao seedlings formed when the number of sowing is too large are crowded, individual development is poor, and there are few tillers, and the seedlings should be thinned in time to make up for the water. Sparse seedlings can establish a suitable group structure and promote individual development. The sparse seedlings combined with watering supplemented with available nitrogen and phosphate fertilizers. The third is the excessive development of fertilizer and water, which is caused by excessive seedlings of rice seedlings with large blades and severe field closure. The roots should be severely squatted, squat 5 to 7 cm between rows of wheat fields, cut off some secondary roots, control the absorption of nutrients, suppress the occurrence of tillers, and cultivate strong seedlings. Fourth, the emergence of spring wheat seedlings and weak spring wheat varieties due to improper selection of varieties will lead to prosperous winter and prone to frost damage. On the basis of scratching and repression, roots were planted before winter and organic fertilizer was applied to protect the wheat seedlings from winter. Disease prevention Generally, about 15 days after wheat is sown, the wheat seedlings are basically grown. The occurrence of pests and diseases in wheat fields should be promptly investigated. 20 days after the emergence of wheat, rust, sheath blight, and full-blown rot can all be infected. When the incidence rate reaches 10%, it can be sprayed and controlled. Specifically: prevention and control of rust, with 12.5% ​​per acre fruit wet WP 15 to 20 grams or 15% triadimefon WP 75 grams of water to spray 50 kilograms, and prevent full erosion. For the control of sheath blight, 20% triadimefon 75 g or 20% Jinggangmycin 40 g per mu can be sprayed on 50 kg of water along the ridge with good results.
Rubber Auxiliaries refer to a series of fine chemical products added in the process of processing natural rubber or synthetic rubber into rubber products, which are used to endow rubber products with performance, ensure the service life of rubber products, and improve the processing performance of rubber compound. Rubber auxiliaries play an important role in improving rubber processing technology, saving energy and improving product quality. In the rubber industry, although the amount of auxiliaries is relatively small, it plays an important role in improving the processing and application properties of products. Excellent rubber Additives can not only improve processing performance, improve product quality, reduce energy consumption and production costs, but also prevent aging and degradation, and prolong service life. Functional rubber auxiliaries refer to auxiliaries that can give special physical and chemical properties to the rubber. Generally, they can be divided into processing auxiliaries, tackifiers, reinforcing agents, homogenizers, special vulcanizing agents, anti-vulcanization and restoring agents, adhesive enhancers, anti-coke agents and other varieties. Dispersants are auxiliaries that promote the dispersion of fillers in the compound. These products have different varieties for different fillers, but the main components include lubricants, plasticizers and surfactants. Dispersants mainly include two kinds of dispersants, Carbon Black dispersants and silica dispersants.
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