Hunan Daily, June 29 (reporter Zhang Shangwu correspondent Zhang Zhengbing Lin Yufeng) to build a high-quality agricultural and sideline products supply base, the provincial plant protection plant inspection station vigorously promote new green technology, "insect mouth to grab grain" to ensure a bumper harvest, pesticide reduction to ensure safety. According to the provincial plant protection plant inspection station, the application area of the early, middle and late rice dihua borer sex attraction technology this year exceeded 1.1 million mu.
In late June, the reporter saw in the Heshan District of Yiyang City that along the rice fields on both sides of the 308 Provincial Highway, a white sex trap was arranged every 30 meters or so, and it looked like stars on the green carpet. According to the plant protection technician who is guiding farmers in the field, this sexual attraction technology is to use synthetic compounds to make a lure core, simulating the information of the female insects of the dichemidal borer to release the information that lures the male insects to come to mate, so as to concentrate on trapping and killing the male insects, reducing the mating rate of female insects, thereby greatly reducing the density of the two borers in the field.
According to disease and insect monitoring, in recent years, the province's rice dimorphic borer has shown a recurring trend, with a perennial occurrence area of more than 50 million mu, which is the number one "insect pest" in grain production. This year, the dichlorogene borer has worsened, and the development progress is advanced.
At the beginning of the year, the province carried out special subsidies for the two-way borer attraction in 65 rice green prevention and control demonstration counties (urban areas), and also focused on supporting 12 counties (urban areas) to create a demonstration county for the whole process of green prevention and control of rice diseases and insect pests, and according to the standard of 1 trap per mu and 1 co-optation core, it was uniformly placed free of charge for large grain growers and cooperatives, so as to achieve a core demonstration area of 5,000 mu and a radiation area of more than 50,000 mu.
Li Yi, director of the provincial plant protection and plant inspection station, introduced that through the project demonstration, the overall prevention and control effect of sex attraction technology on dihua borer has reached 60%, and the average yield per mu is expected to increase by 15 kg. Each season of rice is reduced by at least 1 spray, and the cost savings per mu are increased by about 50 yuan.