The growth of Pinus tabulaeformis is influenced by the sonsau cocuus sinensis chen. When the insect density is more than 300-350 head/hundred beam conifer, sonsau cocuus sinensis chen occurred significantly influence ...The growth of Pinus tabulaeformis is influenced by the sonsau cocuus sinensis chen. When the insect density is more than 300-350 head/hundred beam conifer, sonsau cocuus sinensis chen occurred significantly influence the Pinus tabulaeformis' s growth. when the insect density reached 250-300 head/100 beam coniferous, sonsau cocuus sinensis chen significantly influence the accumulation of Pinus tabulaeformis volume. To determine the sonsau cocuus sinensis chen 2nd instar nymph theory control index was 220.5 / hundred beam needles has a guiding significance to the production practice.展开更多
基金financial support from the National Natural Science Foundation of China (Grant No.51502285)National Natural Science Foundation for Creative Research Group (Grant No.21701047)+2 种基金National Basic Research Program of China (Grant No.21521092)the Science and Technology Development of Jilin Province of China (Grant No.20180520191JH)the Thirteenth FiveYear Program for Science and Technology of the Education Department of Jilin Province (Grant No.JJKH20191024KJ)~~
文摘The growth of Pinus tabulaeformis is influenced by the sonsau cocuus sinensis chen. When the insect density is more than 300-350 head/hundred beam conifer, sonsau cocuus sinensis chen occurred significantly influence the Pinus tabulaeformis' s growth. when the insect density reached 250-300 head/100 beam coniferous, sonsau cocuus sinensis chen significantly influence the accumulation of Pinus tabulaeformis volume. To determine the sonsau cocuus sinensis chen 2nd instar nymph theory control index was 220.5 / hundred beam needles has a guiding significance to the production practice.