First of all, this article analyzes the population trend and the current situation of housing rental of a city.
首先，本文分析了某城市的人口形势和出租房屋目前的状况。
Effect of temperature on development, survival, reproduction, population parameter and population trend index of Spodoptera litura (Fabricius) were studied.
研究了温度对斜纹夜蛾的发育、存活、生殖、种群参数和种群趋势指数的影响。
The regression equations of the rates of hatching, larvae survival, emergence, the egg number laid by a female and population trend indices against temperatures were analyzed.
测定了不同温度下莲雾毒蛾各虫态的存活状况，并就卵孵化率、幼虫存活率、蛹羽化率、产卵量和种群趋势指数等指标与温度的关系进行相关性分析。
The regression equations of the rates of hatching, larvae survival, emergence, the egg number laid by a female and population trend indices against temperatures were analyzed.
测定了不同温度下莲雾毒蛾各虫态的存活状况，并就卵孵化率、幼虫存活率、蛹羽化率、产卵量和种群趋势指数等指标与温度的关系进行相关性分析。
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