Using system science methods to study the system control of pest insect population, has an obvious social significance and practical value.
以系统科学方法研究害虫种群系统的控制,具有明显的社会意义和实践意义。
Now there are a lot of questions in forecasting the plant diseases and insect pests in our agriculture, the content of the science and technology i.
农业灾害发生的频率和造成的损失也逐渐加大 目前我国农业病虫害预报工作中存在着很多问题,总体来说科技含量偏低。
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