Timely field weeding Wheat field weeds have a great influence on the growth of wheat. Generally, weeds are not chemically weeded in winter. We must do it in spring and spray chemical herbicides during the period from turning green to jointing stage. Control of grass weeds Stemming wheat, brome, poisonous wheat and Poa pratensis and other malignant weeds should be used for effective prevention and control of Sima, wild oats, aphids and other weeds can be used to control Hummer, all kinds of miscellaneous Grass can be used to control the world wide. To get a good dosage, use 6.9% of ramie water emulsion 40ml, add water to spray 40kg; use 3.6% of the world's water dispersant mu 24g to 30g, add water to spray 40kg; mu use 3% 25 milliliters to 30 milliliters, add 40 kilograms of water spray, strictly control the amount of medication to avoid phytotoxicity. Broad-leaved weed control Before weeding in the jointing stage of wheat, field weeds were sprayed with herbicides at the 2 to 4 leaf stage. Sophora herba, amaranth, wheat grass can be used 75% Tribenuron Susan suspension agent 1 g ~ 1.2 g, add water 40 kg spray. Grass and broad-leaved weeds can be mixed and used to control 72% 2,4-D butyl ester EC 25 ml to 30 ml or 10% Tribenuron-methyl wettable powder 10 g, and the corresponding amount of hummer, Shima, Kwok Shima Such as mixing, add 40 kg of water spray, can effectively control all kinds of weeds. 1. For the wheat field with insufficient fertilization at the time of sowing and obvious performance of fertility, urea should be reclaimed from 8 kg to 10 kg during the returning jointing period. 2. For the weak seedlings in different conditions before winter, the wheat fields with poor seedling quality after the beginning of spring should seize the opportunity to apply topdressing urea timely and effectively. The amount of topdressing fertilizer is generally 8 kg to 9 kg/mu, and it can also be matched with appropriate amount. Apply 4 kg to 5 kg of phosphorus and potassium fertilizer to ensure fertilizer efficiency. 4. The topdressing of wheat seedlings in the strong seedlings can be appropriately pushed back, and appropriate fertilizers are applied during the period when wheat enters the backgreen jointing period. 5. The wheat fields with prosperous tendencies are subjected to deep cultivator or disc cutters, and 10 to 12.5 kilograms of urea are harvested in the middle and later stages of jointing. Early prevention and control of pests and diseases After entering spring, as the temperature gradually rises, wheat sheath blight and soil-borne yellow mosaic disease bacteria begin to infect wheat strains. The rate of diseased plants has increased significantly. The surge period is at the jointing stage, and due to the great influence on yield, it is generally acceptable. Wheat production is reduced by 10% to 20%. Therefore, in the period of re-green jointing of wheat, prevention and treatment should be conducted in time according to the development of the disease. Wheat sheath blight can use 35% triadimefon (triadimefon), 43% Baosui water emulsion, 22.5% diniconazole, etc. It can also treat wheat powdery mildew and rust. In the wheat field damaged by soil-borne yellow mosaic disease, root-effective nitrogen fertilizer should be applied in time 1 or 2 times, foliar spray of available nitrogen fertilizer and foliar fertilizer 3 to 5 times, while shallow cultivator can increase ground temperature, or spring wheat field, 50% per mu. Phoxim 50 ml + 4.5% beta cypermethrin 50 ml + Virus Bac 15 g + high efficiency foliar 25 ml plus 30 kg ~ 40 kg spray control. Prevent or reduce night frost damage After the Spring Festival, the temperature changes, wheat growth speeds up, but the resistance to low temperatures is significantly reduced. Therefore, according to the weather forecast, irrigation should be performed before the cold current to increase soil moisture and atmospheric relative humidity, smoke or use 2 The foliar spraying of the sugar solution by % increases the sugar content of the leaf cells to increase the cold resistance and effectively prevent or reduce the freezing injury. Tremella Fuciformis Extract,Edible mushrooms polysaccharide,Tremella Polysaccharide,White Tremella Extract Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zyplantextract.com
Timely application of effective fertilizer
3. For the wheat fields that were severely chilled before last year but still not recovered, depending on the situation of the seedlings, the management of the field is strengthened. The urea in the root is applied at a rate of 10 kilograms to 12.5 kilograms with watering, and foliar fertilizer 2 to 3 is sprayed at the same time. Secondly, the cultivator raised the ground temperature to promote the development of the root system, promoted the spring equinox, and ensured the spring eel to form a panicle.
For the spider mites and aphids that appear in some wheat fields, use 20% WP WP 1000 to 1500 times, 15% DF 2,000 to 3000 times, 40% Dimethoate, or 50% Malathion EC 2000 times liquid spray, can effectively control red spider.
Wheat management should be in place after the beginning of spring
After the beginning of spring, the temperature began to increase and wheat growth began to accelerate. However, there are more wheat fields and weeds in some production areas in China. There are red spiders and spotted yellow mosaic disease in individual plots, which requires timely field management. In addition, there are a small number of plots that cause weak seedlings due to late planting or other reasons. The management of spring wheat fields must be strengthened to eliminate various unfavorable factors and ensure the 2017 wheat harvest.