Selection and Combination of Annual Double Cropping Rice Varieties Along the Yangtze River Plain
[Objective]The aim was to screen out the combination of double cropping rice varieties in the Yangtze River plain region,and provide technical reference for the main varieties of early rice and double cropping late rice production.[Method]Ten early indica conventional rice varieties and eight late japonica rice varieties were selected to carry out the comparative test of artificial planting varieties.By investigating the growth period,main agronomic traits,yield and yield components,and from the perspective of rational utilization of temperature and light resources and coordination of double cropping,early rice and double cropping late rice varieties suitable for planting in Lujiang county were selected.[Result]In early rice season,Zhongzu 100,Zaoxian 617,Zhongzu 18 and Zhongjiazao 18 performed well in yield and resistance.Although the yields of Zhe 1613 and Zhongzao 39 were high,the overall growth period was late,which was not conducive to late rice stubble.Changxiangjing 1813,Dangjing 8 and Zhendao 18 showed good performance in yield and resistance in double late season.Although Suxiu 1717 had high yield,its growth period was late,and there was a risk of unsafe full heading.[Conclusion]Zhongzu 100,Zaoxian 617,Zhongzu 18,Zhongjiazao 18 in early rice season,and Changxiangjing 1813,Dangjing 8,Zhendao 18 in double late rice season had better comprehensive performance,which could be freely combined to achieve annual high and stable yield.
The Yangtze River plainDouble cropping riceSelection of varietiesCombination
NETL
NSTL
万方数据
