棉花生育期模拟是研究棉花生长与环境因子关系的重要内容。
The simulation of cotton development stages is necessary for studying of cotton growth in relation to environment.
通过对北固山湿地芦苇的连续试验观测，将芦苇生育期划分为五个阶段，采用生长度日法建立芦苇发育进程模拟模型，并确定了各生育阶段的生长度日参数。
The developmental stage simulation model of reed is made with growing degree day method, the corresponding growing degree day parameters of each developmental stage have also been determined.
模拟结果表明，贵阳气温低、生育期长，其中稻生育期内温度适中、光照较强，干物质生产力高。
The result shows that Yunnan Guizhou Plateau is a high dry matter production area for middle rice, because of higher radiation, lower temperature and longer growth period.
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