川东南再生稻稻作区水稻新品种品比试验

Rice Cultivar Comparison Test Under the Medium Rice-Ratoon Rice Mode in Southeast Sichuan

[目的]筛选川东南地区"中稻—再生稻"种植模式下的最适水稻品种。[方法]以Ⅱ优838作对照,比较25个品种在川东南地区"中稻—再生稻"种植模式下的头季稻和再生稻的主要农艺性状、产量及产量构成因素以及抗逆性。[结果]川优3203、川香198、冈优2009、蓉穗415、宜香1313、Ⅱ优498、Ⅱ优3213、Ⅱ优615等8个品种头季产量高,再生力强,再生稻产量高,抗逆性强;华优75、G优802、一丰8号、Ⅱ优9号、内5优5399、冈优1237等6个品种2季产量均达10 500 kg/hm2以上,再生力较强,再生稻产量也较高;宜香3551、泸优2号、川优89头季和再生季均表现与对照相比显著减产;天龙优504、冈优1237头季中稻产量较高。[结论]在川东南地区,川优3203、川香198、冈优2009、蓉穗415、宜香1313、Ⅱ优498、Ⅱ优3213、Ⅱ优615等8个品种适合作为"中稻—再生稻"品种推广应用。

[Objective] To screen the optimum rice varieties under the cropping pattern of ＂Medium rice-Ratoon rice＂ in Southeast Sichuan.[Method] Taking Ⅱyou 838 as the check,the agronomic characters,yield,yield components and resistance of the main crop and ratoon rice of 25 rice varieties were compared under the cropping pattern of ＂Medium rice-Ratoon rice＂ in Southeast Sichuan.[Result] Eight rice varieties concluding Chuanyou 3203,Chuanxiang 198,Gangyou 2009,Rongsui 415,Yixiang 1313,Ⅱyou 498,Ⅱyou 3213,Ⅱyou 615 had high yield of the main crop and ratoon rice,strong regeneration capacity and strong resistance.Six rice varieties concluding Huayou75,Gyou 802,Yifeng 8,Ⅱyou 9,Nei5you 5399 and Gangyou 1237 had strong regeneration capacity.The total yields of the main crop and ratoon rice were all above 10 500 kg/hm2,and the yields of ratoon rice were high too.The yields of the main crop and ratoon rice of Yixiang3551,Luyou 2 and Chuanyou 89 decreased remarkably compared with the check.The yields of the main crop of were high.[Conclusion] Eight rice varieties concluding Chuanyou 3203,Chuanxiang 198,Gangyou 2009,Rongsui 415,Yixiang 1313,Ⅱyou 498,Ⅱyou 3213,Ⅱyou 615 were suitable to popularize and applied to crop under the pattern of ＂Medium rice-Ratoon rice＂ in Southeast Sichuan.