通过对茭白二化螟的越冬习性、产卵习性、钻蛀及转移规律，田间种群动态、天敌种类进行了调查和研究。
This paper dealt with the overwintering, oviposition, boring and transferring behavior, population dynamics, and control of striped stem borer (SSB), Chilo suppressalis in Zizania fields.
采用生命表的形式研究了三化性桑蟥自然种群数量动态规律。
The number dynamic law of natural racial group of the trivoltinism mulberry white caterpillar was studied Using life table.
采用黑光灯引诱逐日调查的方法，研究了太行山低山丘陵区鳞翅目趋光性昆虫种群数量动态变化规律。
By the black light lamp lure and investigation day after day, the population dynamics of Lepidoptera phototactic insects in hill area of lower Taihang Mountain is studied.
不同放牧制度下，主要植物种群的产量干鲜重比值差异不大，季节动态规律基本一致。
There was no significant difference in the ratio of dry weight to fresh weight among the plants.
分析了白皮松的群落学特征、径级结构及其密度变化规律；绘制了存活曲线和死亡曲线，从多角度研究了白皮松幼林种群的动态变化规律。
The community feature, size-class structure, the regulation of changing density were analyzed and the survival curve, the death curve and the life table were worked out.
本文用种群大小结构代替年龄结构研究了沙地云杉种群的大小结构、分布格局和动态规律。
The size structure and distribution pattern of Picea mongolica population on sand dune and their rerlationship to eco-environment are studied by size structure in place of age structure.
群落主要植物种群贮藏性营养物质动态呈现规律性变化，但不同放牧制度下，变化规律存在差别。
There are regular dynamics for plant reserves between continuous grazing and rotational grazing, but dynamics are different.
查明了南宁市郊区甜菜夜蛾周年种群数量动态规律及不同寄主上的虫口密度差异；
In addition, the quantitative dynamics of population and the densities difference of S. exigua on different host plants in the field were found out.
查明了南宁市郊区甜菜夜蛾周年种群数量动态规律及不同寄主上的虫口密度差异；
In addition, the quantitative dynamics of population and the densities difference of S. exigua on different host plants in the field were found out.
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