Comparison of yield and composition factors of different japonica rice varieties under rice-shrimp co-cultivation mode
Nineteen high-quality new varieties of japonica rice were selected for comparative experiments under the rice-shrimp co-cultivation mode.The results showed that there were varying degrees of differences in the average number of effective panicles per 667 m2,total grains per panicle,seed setting rate,thousand grain weight,and yield of 19 japonica rice varieties under the rice-shrimp co-cultivation mode,and the variation in yield components was significant;Among all the tested varieties,the yield of Xiangyuan 99 was higher than that of other varieties,mainly due to the balanced performance of various yield components in the rice-shrimp co-cultivation mode,and the overall excellent indicators of grains per panicle,seed setting rate,and thousand grain weight.
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