Effects of SRI on dry matter production and grain yield of Yuyou 11.

The large panicle type hybrid rice Yuyou 11 for experiment on the System of Rice Intensification(SRI) was studied.The result indicaded that the grain yield of the treatment that was planted 13.5×10~4 hole/ hm~2 under SRI was obviously higher than that of treatments.The average yield was about 10072.20 kg/ hm~2.The LAI,chlorophyll content and dry matter production under SRI were higher than that of the traditional cultivation.The results showed that SRI can form more photosynthetic organ,strengthen photosynthetic ability and matter production,provide the sufficient nutrient to sink continually,make the seed more plump,increase 1000-grain weight,seed-setting percentage and filled grains per panicle,and finally obtain high yield.