甘蓝型三系杂交油菜秋播制种母本打薹及适宜施肥技术研究  

Study on Top Pruning for Female Parent and Suitable Fertilization Technigue in Seed Reproduction of Hybrid Rape (Brssica napus) in Autumn Sowing

作　　者：侯燕[1] 朱文秀[1] 李厚英 

机构地区：[1]贵州省油料科学研究所,贵州思南565109 [2]贵州省种子公司,贵阳市550001

出　　处：《种子》1997年第4期33-35,共3页Seed

摘　　要：油菜打薹杆株需要有较强的长势,才能使其再生分枝和花蕾角果较多。研究表明:在密度为3万株/公顷的情况下,以施纯氮207kg/公顷的处理,冬前绿叶数达13.7—14.5片,最大叶长达37—40cm;成熟期小分枝数在100个以上,单株有效角1286.4个;产量达到1046kg—1326kg/公顷,与施纯氮276kg的产量差异不显著;杂种不育株率为13％左右,比施氮量为276kg/公顷的不育株率低4.6％—5.0％。Study to indicate: application amount of mitrogen 207kg/hm is good in 30000plant/hm of density. before winter green. leaf to 13.7 -14.5 leafs/plant, maxmuni leaf length to 37-40cm. little branch to 108.9 branchs plant of mature date, effective pod to 1286. 4pods/plant, yield to 1046-1326kg/hm and not signifiance with application amount of nitergen is 276kg/hm, rote of sterile is 12.7% - 13. 3% then low 4.6% -5.0% of applieation amount of nitrogen is 276kg/hm

关 键 词：胞质不育 秋播制种 打薹 甘蓝型油菜 氮肥 

分 类 号：S565.403.5[农业科学—作物学]