In the field of mathematical ecology, it is important to use mathematics to study epidemic dynamics and population ecology.
在数学生态学领域，用数学的方法研究传染病动力学和种群生态学很受重视。
Some Suggestions for the pest forecast and control were also brought forward based on the characteristics of the pest population dynamics and distribution in the direct seeded rice field.
根据直播稻区稻水象甲种群动态和分布特点，提出了相应的虫情调查和测报防治建议。
Through a whole year field investigation, this paper analyzed the population dynamics of pests and their enemies in organic and normally cultivated rice fields.
通过田间调查，分析比较了有机耕种稻田和常规耕种稻田害虫和天敌的发生动态。
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.
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；
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