水稻定量播种旱育壮秧技术研究

Study on Quantitative Sowing and Dry-raised Sturdy Seedling on Rice

以超级稻盐丰47为试材。采用小区对比试验方法,研究不同播量对滨海稻区水稻生育及产量的影响。结果表明,水稻秧苗的株高、叶面积指数与播量呈正相关,而叶龄、茎基宽、带蘖率、百株干重与播量呈负相关,并且随着叶龄的增加,各处理间的相对差异逐渐加大。抽穗期至成熟期干物质产量占籽粒产量的百分比、单位面积的颖花量及水稻产量随着播量的降低而增加。

The effect of different sowing density on growth and yield were studied by comparative test with Yanfeng47.The results indicated that sowing amount was correlated positively with the plant height of Seedling and leaf area index,but negatively with leaf age,basic stem width,tiller occurrence rate and 100-seedling dry matter,and relative differences increases gradually along with the increase of leaf age.The percentage of dry forage yield in grains yield,panicle per unit area and yield increased with the decrease of sowing amount from heading stage to maturity stage.