In North China, the main cultivation area of ​​winter wheat, total eclipse disease is a typical root disease, which farmers often call it “black foot diseaseâ€. To a certain extent, it is a devastating disease on wheat, causing clusters or large pieces of plants to die, reducing the number of effective panicles, the number of grains per panicle and 1000-grain weight, resulting in serious yield losses.
The use of comprehensive prevention and control measures can effectively solve the problem of total erosion, especially soil disinfection is the key to prevent and control wheat total erosion.
First, attach importance to quarantine, control and avoid introduction from the affected area.
Second, agricultural control. In order to reduce the source of bacteria, it should be rotated regularly, and the re-occurring plots should stop planting wheat every 2-3 years, replanting garlic or onion with the same growth period as wheat, or replanting spring crops, such as spring potatoes and spring. Non-host crops such as peanuts.
Third, soil disinfection. It can be used with 1000g of 50% carbendazim and 1000g of pentachloronitrobenzene; or 400-500g of 50% dichloroisocyanuric acid; or 100-150g of 85% trichloroisocyanuric acid. The above agents are mixed with 10-20 kg of fine soil, or mixed with wheat base fertilizer, evenly spread to an acre of land, and then rotary tillage or tillage and then sowing.
Fourth, the pesticide is seeded. Use 12.5% ​​total etched 20 ml or 20 ml of cola, +100 ml of chlorpyrifos + 150 g of wheat, 10 kg of dried wheat, and then sown, to treat the total eclipse, and also treat smut and other root infections. Disease.
Fifth, spray the stem base. In the three-leaf stage, the re-greening stage and the jointing stage of wheat, use 20% triadimefon emulsifiable concentrate per acre 100-150 g, add water 80-100 kg, stir well, screw off the nozzle, and spray directly with the spray bar. Drenched at the base of the wheat stem.
Sixth, rational fertilization. In theory, the production of 100 kg of wheat seeds requires 2.95 kg of pure nitrogen, 1.06 kg of phosphorus, and 2.83 kg of potassium. For the winter wheat cultivation area in North China, corn stalks returning to the field, partial use of chemical fertilizers, fertilizer yield increase efficiency, while calcium, boron and zinc and other trace elements do not need to be replenished all the year round, it is recommended to apply fertilizer: base fertilizer to increase nitrogen, phosphorus, potassium fertilizer; At the same time of wheat base fertilizer, for the current situation of boron deficiency in most winter wheat areas in the north, the application of 200-400 grams of US boron and base fertilizer can promote the development of wheat roots, make plants grow robustly, increase yield and enhance stress resistance. . During the greening period of wheat, it is recommended to apply 20-40 kg/mu of functional fertilizer with nitrogen, containing medium and trace elements, and containing marine active substances.
More pesticide knowledge , please pay attention to China Pesticide Network
.jpg)
Led Point Light,Outdoor Led Dot Light,Architectural Led Pixel Light,Led Pixel Matrix Light
Shen zhen SH LED Technology Co.,Ltd , https://www.pixellightsolutions.com