Wheat variety of pests becoming heavy attention to the timely prevention and treatment

As temperatures steady rise, wheat variety of pests, especially to accelerate the development of stripe rust, heavier, prevention and control work has entered a critical period. According to the site and local surveys, wheat stripe rust in mid-December last year, has begun to see in late disease, see the disease early time, degree of emphasis are no past two decades; currently Shen Tan Tan Xiang Zhang Wan Fang The earliest point Kawamura see disease has spread to the whole field and the surrounding fields, more than 60% disease Tian, ​​ill fields diseased leaves rate of 7 - 24%, the local strain rate of 100% (see below photo); recent The temperature and humidity are on stripe rust expansion and spread very favorable, and has begun to enter Sheng epidemic; back sprayers Part Catcher spider, sheath blight, powdery mildew, also has heavier occurred among the one hundred local spider insects of up to 6,000 or more, the amount of 50 single leaf insects more than the amount of 120 insects per plant or more. Therefore, improving the current wheat pest control work is to ensure that the harvest of wheat yield important part localities must seize, grasp, prevention and treatment. Now the main pest control techniques as outlined below:
A, control time
1, wheat stripe rust, powdery mildew: In late March, the first pass drug must be administered, the incidence of heavy plots, in April, the middle and then spraying 1 - 2 times.
2, wheat sheath blight: strain rate of more than 10% of the plots should be timely drug prevention and treatment, the incidence of severe plots interval 7-10 days and then spraying 1 - 2 times.
3, wheat spider: the amount of one hundred insects over 500 plots to drug prevention and treatment.

Second, the control methods
1, wheat stripe rust, powdery mildew: mu 15% triadimefon WP 100 g (2 2), or 20% triadimefon EC 60 ml, 12.5% ​​diniconazole (Wo fruit Lee) 60-80 g , manual sprayers watered 60 kg, 15 kg watered motorized sprayer spray.
2, wheat sheath blight: mu 5,000,000 units Jinggangmycin 50 grams, manual sprayers watered 50 kg, 15 kg watered motorized farm sprayer spray.
3, wheat spider: mu 73% propargite EC 1500 times, or 1.8% abamectin 3000 times, 20% off Hartley 1800 times, 50 kg sprayer watered, watered 15 motorized sprayer kg, jointing noon spraying, after heading 11:00 until 16:00 after spray. Occurred heavier plots should be spaced 7-10 days and then spraying 1 - 2 times.