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水稻生育期的环境因子是影响稻米品质的一个极为重要的因素 ,特别是抽穗期—成熟期的环境因子。施氮肥量和抽穗期—成熟期间的日平均气温差对糙米率和垩白率具有负向作用 ;日平均最低气温对精米率和胶稠度具有正向作用 ,日平均气温差对精米率和胶稠度具有负向作用 ;施磷肥量对整精米率具有负向作用 ,日平均最低气温对整精米率具有正向作用 ;降雨量和日平均气温差对垩白面积具有正向作用 ;降雨量和日平均最高气温对透明度具有正向作用 ;日平均最低气温差对长宽比和直链淀粉含量具有负向作用 ,日照时数对长宽比和直链淀粉含量具有正向作用 ;日平均气温对糊化温度具有正向作用 ;日照时数对蛋白质具有负向作用
Environmental factors during rice growth period are one of the most important factors that affect the quality of rice, especially the heading stage - mature environmental factors. The average daily temperature difference between nitrogen application amount and heading stage - maturity had a negative effect on the brown rice rate and chalkiness rate. The daily average minimum temperature had a positive effect on the milled rice rate and gel consistency. The consistency has a negative effect; the amount of phosphate fertilizer has a negative effect on the milled rice rate, the daily average minimum temperature has a positive effect on the milled rice rate; the rainfall and the average daily temperature difference have a positive effect on the chalky area; the rainfall and Daily average maximum temperature has a positive effect on transparency; daily minimum temperature difference has a negative effect on aspect ratio and amylose content, sunshine duration has a positive effect on aspect ratio and amylose content; average daily temperature The gelatinization temperature has a positive effect; sunshine hours have a negative effect on the protein