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

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.