Wheat disease and pest control points
Due to the high temperatures in winter last year, wheat seedlings generally grow too prosperous, and diseases occur early. This has caused a serious impact on this year's wheat harvest. In addition to wheat control, wheat sheath blight, rust, powdery mildew, and locust control are even more important. Pay attention.
I. Sheath blight:
Wheat sheath blight is one of the most important diseases of wheat. It occurs from the end of wheat till the jointing stage, and the winter temperature
Higher or higher than normal rainfall, disease occurred early, the incidence of heavy, easy to lodging in the late sick field, seriously affecting the yield and quality of wheat.
Control method: 5% Jinggang toxin 1 000 times + bacteria aseptic 1 000 times liquid + Chunyu No. 1 1 seed, depending on the degree of disease occurrence, 2-3 times in succession, or 12.5% ​​of wolfberry fruit 1 500 times liquid + More income, excellent results.
2. Powdery mildew, rust:
The critical period of wheat powdery mildew and rust prevention and control is the prevention of wheat before returning green jointing. If it is found that there are sporadic distributions in the fields or rainy weather is coming, all fields must be sprayed in a timely manner. Commonly used drugs 15% triadimefon + Chunyu No. 1 1 (or beioxazole) + more than 10ml. That is, it can increase the control effect, and can also regulate vegetative growth and reproductive growth.
Three. Locusts:
The locust occurrence is fast and the damage is heavy. Generally, 100 cultivars in the jointing stage of wheat have more than 10 larvae, and the locust strain rate is more than 5%. The pesticides are sprayed for prevention and treatment. The commonly used pesticides include crocodile 1500 times and more for 10 ml. , Or 50% anti-influx 3 500 times fluid + spring rain 1 15kg water, wheat aphids, the main control period for the heading of wheat aphid, secondary aphids are not easy to control, must follow the principle of early defense, heavy defense to carry out. The density of insects can be controlled 2 to 3 times.
Four. Wheat midge:
Wheat midge has red midge and yellow midge. Overwintering larvae in the jointing stage of wheat, began to break up the rise, when the wheat enters the heading stage, the adults prosperous spawning in heading, but not yet flowering wheat ears, wheat flowering filling stage serious harm. Therefore, to seize the favorable opportunity between wheat heading and flowering, the commonly used pharmaceuticals include 1 000 times faster Coke, 1 200 times more acetamiprid, and other highly effective and low-toxicity agents.