摘要
在喀什疏附县,初步研究了杏树重要害虫吐伦球坚蚧(Rhodococcus turanicus Arch.)种群密度与杏树产量的关系,初步探明了吐伦球坚蚧对杏树的为害损失率,通过回归分析,建立了杏树损失率与吐伦球坚蚧种群密度的回归模型为:Y=15.724 Ln(X)+59.543(Y为产量损失率,X为吐伦球坚蚧种群密度,单位为头/cm^2),相关系数(R^2)为0.896;在此基础研究了在不同价格与不同药剂防治吐伦球坚蚧的经济阈值和投入产出比。
In Shufu County of Kashi Region, the initial investigation was carried out on the relationship between population desity of important insect pest Rhodococcus truanicus Arch and yield of apricot. It initially verified the loss rate caused by Rhodococcus turanicus Arch. The regression model between the loss rate of apricot and Rhodococcus truancus Arch population density was established as follows： Y = 15. 724 Ln（X） ＋ 59. 543（Y was the loss rate of the yield, X was the population density of Rhodococcus turancus Arch, the unit was head/cm^2）, the correlation coefficient was （ R^2 ） 0. 896; the ratio of economic threshold to input - output were studied under different price and different pesticide control.
出处
《新疆农业科学》
CAS
CSCD
北大核心
2009年第5期1053-1056,共4页
Xinjiang Agricultural Sciences
基金
新疆维吾尔自治区重点攻关项目(200631102)
关键词
杏
吐伦球坚蚧
经济阈值
apricot
Rhodococcus turanicus Areh.
economic threshold
