How to prevent and control diseases and insect pests and diseases in wheat in 2017
In 2017, wheat is prone to pest and disease control methods at the ear and stage, and the wheat ear stage is the period of pests and diseases. If the control is not effective, it will cause irreparable damage to wheat production. It is necessary to follow the principle of “prevention first, comprehensive preventionâ€. , to prevent early and early control at an appropriate time. The occurrence of scab occurs before and after wheat heading, and it is highly prone to occur when the weather is cloudy and the air humidity and temperature are appropriate. It is necessary to spray the medicine for the first time before the wheat heading reaches 70% and the spikelet is not opened. It can also be sprayed again during the wheat flowering period. Can use 80% carbendazim ultrafine powder 50g or 50% carbendazim WP 75~100g to spray with water. It can also be sprayed with water with 25% cylamella suspoemulsion 100 ml. Focus on the uniform spray of wheat ears when spraying, the safety interval is 21 days. In the late growth stage of wheat, the implementation of “one spray three prevention†is the key technology to prevent disease, prevent insects, prevent dry heat, increase grain weight, select pesticides, fungicides and foliar fertilizers suitable for disease prevention and pest control, and adopt scientific formula to carry out Spray evenly at the right time. In the middle and late stages of wheat, there are also wheat mites, wheat spiders, midges, powdery mildew and rust. For the prevention and control of powdery mildew and rust, 20% triadimefon emulsifiable concentrate can be sprayed with 50~75 ml per mu. The prevention and control of wheat spider can be controlled by spraying 1.8% avermectin 3000 times liquid; Prevention and control of wheat larvae can occur in the adult stage from the heading of wheat to the early stage of flowering, and the 5% cypermethrin emulsifiable concentrate is sprayed with water of 20~30 ml to treat the first generation of cotton bollworm; the stalk can be used for 50% of the cockroach 8~10 Gram spray, or 10% chlorfenapyr 15~20 ml spray, can also cure the gray planthopper. Spraying foliar fertilizer can spray 0.2%~0.3% potassium dihydrogen phosphate solution or 0.2% plant cell membrane steady state solution in the grain filling stage of wheat, spraying 50~60 kg per acre. The spraying time of “one spray and three defenses†is best sprayed on sunny days and no winds at 9-11 hours, sprayed after 4 pm, the spray volume per acre should not be less than 30 kilograms, evenly sprayed, especially pay attention to spray to the lower blades. When spraying in the flowering stage of wheat, the pollination time should be avoided, usually after 10:00 am. Before the spraying, you should pay attention to the weather forecast to avoid raining within 24 hours after spraying, which will reduce the effect of “one spray and three prevention†on wheat. High-yielding wheat fields should be sprayed 2 to 3 times at intervals of 7 to 10 days. It is necessary to strictly abide by the safe operation rules for pesticide use, do a good job in personnel protection, prevent pesticide poisoning, and do a good job in cleaning the application equipment. This article URL: How to prevent and cure pests and diseases in wheat and wheat in 2017 Organic Buckwheat Juice Green Powder Organic Buckwheat Juice Green Powder,Buckwheat Juice Powder,Buckwheat Grass Juice Powder,Buckwheat Grass Powder Hengshui Shanzhi Health Drink Co., Ltd , https://www.grasspowder-sz.com