超级杂交早稻陆两优996制种“九二○”施用技术  

Study on GA3 application technology for super hybrid rice seed production of Luliangyou996 combinations

作　　者：雷东阳[1] 陈立云[1] 肖层林[1] 孙鹰[1] 张桂莲[1] 

机构地区：[1]湖南农业大学水稻科学研究所,湖南长沙410128

出　　处：《湖南农业大学学报（自然科学版）》2007年第1期1-4,共4页Journal of Hunan Agricultural University(Natural Sciences)

基　　金：国家农业科技成果转化基金项目(05EFN214300193);湖南省"十一五"重大科技专项(2006NK1001)

摘　　要：为了探明陆两优996制种“九二O”高产、高效施用技术,研究了该组合制种“九二O”不同用量和喷施时期对其母本陆18S异交态势的改良效果及制种产量的影响.结果表明:适时适量喷施“九二O”是改良陆18S抽穗特性和穗层态势,提高陆两优996制种产量的有效措施.在母本群体处于较高水平,且生长整齐的条件下,抽穗率达25%左右,按210 g/hm2的剂量喷施“九二O”较适宜.In order to probe into a high yield and efficiency techniques for Luliangyou996 combination, the effect of GA3 on improving the out-crossing characteristics of its female parent, LulSS and the seed yield were studied. The results indicated that using GA3 at proper spraying periods with appropriate dosages was an effective measure for improving the heading characteristics, panicle layer carriage of Lu 18S and the seed production yield. It was optimal to spraying OA3 at the dosage of 210 g/hm^2 and at the initial heading panicle rate of about 25% under the conditions of high level of population and growth uniformity of Lu18S.

关 键 词：杂交水稻 制种 陆两优996 陆18S 九二0 

分 类 号：S511[农业科学—作物学]