How to prevent wheat trematodes

How to prevent wheat trematodes? Please introduce the methods of wheat trematode control by referring to the following methods: 1. The occurrence of wheat trematodes occurs one generation a year, the overwintering larvae cocoon in 20 cm of soil for summer and winter, and the following spring when the temperature rises to 10 degrees (when the wheat is in the jointing stage). Trematodes begin to break cocoons and rise to 3 cm 10 cm soil layer ready to pupate. When the temperature is 12 degrees (this is the booting stage of wheat, mid-late April), the larvae pupate at a surface of about 3 cm, which is the best time to spread poisonous soil to control trematodes, otherwise, after wheat heading, the adults of trematodes flourish, and the emerging adults can mate and lay eggs on the same day. Each adult can lay dozens to hundreds of eggs, hatch into larvae after 5-6 days, and drill into the wheat glume to feed on the filling wheat grains. In the later stage of grain filling, the mature larvae drill out of the glume after wet wheat ears after rain or dew, and fall in the soil over the summer and winter. When the wheat was harvested, the killed wheat grains became "sparrow tongues" or "small black spots", resulting in a serious reduction in production. 2. The control technology of wheat sucking pulp occurred seriously in wheat fields last year or in spring this year. Wheat fields with more than 2 worms in each sample (20cm × 20cm × 20cm) must pay attention to control. The principle of "giving priority to the control of pupa stage and supplemented by adult control" should be grasped in the control of wheat trematodes. The specific method is as follows: in the wheat booting stage, 2.5% of the mu is used to reach 2-3 bags, mixed with 15 kg of fine soil to make poisonous soil, and in a windless day, it is evenly sprinkled into the wheat field. If there are watering conditions, the control effect of pouring water after spraying is higher, and the control effect can reach more than 85%. The control of adult stage is the last line of defense to control the damage of wheat trematodes, which should be controlled in the early stage of wheat heading and flowering, that is, the initial stage of adult unearthing. Aphid net 50-60ml or Yago 40-50ml can be used per mu and sprayed with 15-30kg of water. Click to get more wheat planting technology click to get more grain planting technology