气温对水稻生育模型影响的研究

根据 2003、2004 年两年的气温观测和水稻各生育内的重量数据,通过气温对水稻生育模型的影响研究,初步试验结果表明:积温的不同直接影响水稻干重 S型曲线的拐点,拐点时间主要在7月中旬到8月中旬,此时的作物干物质增长速度最快;抽穗、开花、灌浆期温度的变化对水稻的影响大;积温的变化与源(叶)的变化呈正相关,与库(穗)的变化呈负相关;随着积温的减少,育苗播种和插秧均推迟,而穗分化、抽穗和成熟提前。

Research that the Air Temperature Affect the Growth Model of Rice

According to the weight data of the rice within the every growth time and the air temperature observation between 2003 and 2004 year, through the research that the air temperature affect the growth modle of rice, The primary test result has indicated: the accumulated temperature difference affect directly S curve inflexion which is dry weight of rice. The inflexion time mostly appear between the middle of seventh month and the middle of eighth month. In this time, dry substance of crop the most rapidly increase. The temperature change will be able to affect greatly that the rice tassel and blossom and grout. The accumulated temperature and source (leaf) change is positive interfix. The accumulated temperature and storeroom (tassel) change is negative interfix. According as the accumulated temperature decrease, it will be postpone to seed and to rear young plant and to transplant, it will be advanced that the tassel of rice is polarization and the rice tassel and the rice is grown up.