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锦西县张家沟大队是重点李子产区,全队有1万多棵李子树,常常遭受食心虫的危害。去年,他们采用堆土的方法进行防治,收到了较好的效果。总产达74万斤,比1977年增产3倍多,好果率达99.4％,比1976年虫果率压低了8.1%。培土时间:据测报观察,李小食心虫越冬代成虫的羽化在4月下旬至5月上旬,因此,于4月28～30日,集中人力将8,000多株结果树全部培了土堆。堆土方法:李小食心虫以第三代幼虫在树干基部地下作茧越冬,因其成虫拱土力弱,故采用培土方法即可防治。一般在树干周围1～1.5尺范围内培成3～5寸高的土堆,踩实,即可取得良好防治效果。
Zhangjiagou Jinxi County Brigade is the focus of the production area, the team has more than 10,000 trees, often suffer from heart worms. Last year, they used the method of earth piles for prevention and treatment and received good results. The total output reached 740,000 kg, an increase of more than three times that of 1977, with a good fruit rate of 99.4%, a drop of 8.1% over the rate in 1976. Soil preparation time: According to the observation of observation, the emergence of Beagle-worms overwintering on behalf of adult insects in late April to early May, therefore, April 28 to 30, the concentration of human resources will be more than 8,000 trees cultivated all mounds. Soil puddling method: Li Xiaogong worm to the third generation of larvae in the base of the trunk cocoon underground for winter, because of their adult arch soil weak, so the method can be used to prevent soil erosion. Generally in the trunk around 1 ~ 1.5 feet training into 3 to 5 inches high mound, step on real, you can get good control effect.