不同穗型粳稻品种产量和品质性状的比较分析

Comparative Study on Yield and Quality in Japonica Varieties with Different Panicle Types

利用不同穗型粳稻品种 ,在不同氮肥水平下对产量性状和品质性状进行了比较。试验结果表明 ,随着施氮水平的提高 ,直立穗型品种产量增加幅度大于半直立和弯曲穗型品种 ,但产量构成因素的变化趋势 ,在各种穗型品种间变化基本一致。随着施氮量的增加 ,3种穗型品种的糙米率、精米率和整精米率均增加 ,而垩白率的变化在不同穗型品种间不相一致。直立穗型品种较半直立和弯曲穗型品种 ,胶稠度相对较硬 ,蛋白质含量较高 ,并且对氮素的反应较敏感。

Comparisons on yield and quality characters in different panicle types were studied under different N levels. The results showed that the yield increment of erect-panicle varieties was greater than that of semi-erect and curved panicle types, but the changes of yield components of three panicle types showed same trend with the increase of N application amount. Brown rice, milled rice and head milled rice all increased in three panicle types varieties, but chalkiness rate in three panicle types varied among different N applications. Compared with half-erect and curved panicle varieties, gel consistency in erect panicle varieties was shorter and the protein content was higher, which sensitive to N application also were higher.