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Wheat spring management prevents four pests
The spring wheat management plays a decisive role in the yield of wheat. Therefore, grasping management in spring wheat fields to prevent the occurrence of “four evils†is the key to ensuring that wheat harvests a bumper crop. Control "Fat Harm" Apply base fertilizer, apply organic fertilizer 5000-10000 kg, urea 20 kg or ammonium bicarbonate 40 kg or diammonium phosphate 30 kg, potassium sulfate 10 kg, wheat special fertilizer 2-5 kg; return to green when each acre Topdressing 20 kg of DAP, 5 kg of potassium sulfate; 10 kg of urea followed by spraying or spraying 0.3-0.4% potassium dihydrogen phosphate solution during the grain filling period; formula fertilization, avoiding single application of fertilizer, formula ratio (nutrient) The content is N:P:K=3:1:3; when organic manure is applied, it is necessary to use organic manure that has been decomposed, and do not use “raw†fertilizer to prevent the influence of “raw†manure on the root system of wheat; Pay attention to fertilization methods and techniques. After chemical fertilizers are applied to the ground, apply more than 5 cm deep and cover soil. Do not apply lightly or naked to prevent volatiles from producing “burning seedlings†on wheat seedlings. Prevention and treatment of "water hazards" Drainage ditch around the wheat fields so that due to excessive watering, so that excess water flow away; when the soil is ready to be crushed in the wheat field, the ground should be flat, can not have uneven land in order to facilitate watering; When watering the wheat, pay attention to the amount of watering not too big. It is advisable to see the water seep within 2 hours after watering. You should not leave “Clear Water†overnight; if you need to grow wheat in the shallow groundwater, consider The method was to dig wells around so that groundwater could seep into the ditch and make wheat grow safely. Prevention of “drug injury†When using pesticides to control pests and diseases, we must do a good job in predicting and forecasting pests and diseases so that we can know what to do and what we can do to avoid unnecessary prevention and control, and to waste human, material, and financial resources. The concentration of pesticides used should not be too great. Or too small, too much wheat suffers from phytotoxicity, but also pollutes the environment. When it is too small, it is unfavorable for pest control, resulting in continuous and repeated use of drugs, increasing expenditures, and also contaminating the environment. Pesticide use requires variety, The pest control medicine can not be used to prevent and treat diseases. The medicine used to prevent and treat diseases cannot be used to control pests. The use of technology and methods must be correct. The spray should be sprayed, and the root should be irrigated; the use of alkaline water should be used after the medicine is used up. Rinse clean and prevent the use of herbicides that are not clean and used, causing phytotoxicity in wheat. Prevention of “Heat Injury†Wheat fields with high density have adopted techniques such as ploughing, deep ploughing and repression during winter and early spring management to limit the continuous increase in density, so that the maximum seedling density in the winter is about 800,000/mu, and spring 100. -1.1 million per mu; Late fertilization, less fertilization, less nitrogen fertilization, and more phosphorus and potassium fertilizers; in the course of wheat management in the spring, we must strengthen the management of water, and the lack of water can easily lead to the danger of dry hot wind; strengthen the spring control measures so that The wheat root system is developed, the stems are stout, relying on their own ability to resist dry hot wind; if dry hot air occurs, the roots will be supplemented with “Maifengâ€, “photosynthetic fertilizerâ€, and “naphthylacetic acid†to be protected.