摘要
选用角果抗裂性存在显著差异的2个油菜品种,于2012—2014年进行氮肥(0、90、180、270和360 kg N hm–2)、磷肥(0、60、120、180和270 kg P2O5 hm–2)、钾肥(0、75、150、225和300 kg K2O hm–2)用量对油菜角果抗裂性相关性状影响的单因素试验。结果表明,氮、磷、钾肥用量对油菜抗裂角指数的影响均呈波峰曲线变化,华双5号和华航901达最大抗裂角指数的纯氮用量分别为160 kg hm–2和140 kg hm–2、P2O5为120 kg hm–2和160 kg hm–2、K2O均为180 kg hm–2;油菜抗裂角指数的变化大小因肥料种类而异,氮、磷、钾3种肥料中,钾肥对抗裂角指数的影响最大;不同氮、磷、钾肥用量处理条件下,角果果壳重和植株株高的变化是影响油菜角果抗裂角性的重要因素,可作为初步、快速筛选油菜抗裂角种质资源的重要指标。
To study the effects of the farming measures on silique shatter resistance of rapeseed, we designed different fertilizer application combinations of N （0, 90, 180, 270, and 360 kg N hm-2）, P （0, 60, 120, 180, and 270 kg P205 hm^-2） and K O, 75, 150, 225, and 300 kg K20 hrn-2） with two varieties for better machinery harvest. Results showed that with the increase of N, P and K fertilizer application rates, the silique shatter resistance index （SRI） of the two varieties changed as a multi-peak curve. The highest SRI of Huashuang 5 was reached under application of 160 kg N hm2, 120 kg P205 hm^-2 and 180 kg K20 hm^-2, while that of Huahang901 was under application of 140 kg N hm-2, 160 kg P2O5hm^-2 and 180 kg K20 hm^-2. The change degree in SRI differed due to different fertilizers, and K fertilizer had the greatest effect on the SRI of the two varieties among N, P and K fertilizers. The silique wall weight and plant height under different N, P and K fertilizer rates were the key factors affecting rapeseed＇s SRI, and could be used as important indexes in silique shatter resistance screening.
出处
《作物学报》
CAS
CSCD
北大核心
2015年第9期1416-1425,共10页
Acta Agronomica Sinica
基金
国家科技支撑计划项目(2013BAD20B06
2014BAD11B03)
国家现代农业产业技术体系建设专项(CARS-13)
国家公益性行业(农业)科研专项(201203096)
华中农业大学自主科技创新基金(2013PY001)资助
关键词
油菜
肥料
抗裂角指数(SRI)
Rapeseed
Fertilizer
Silique shatter resistance index （SRI）
作者简介
第一作者联系方式：E—mail：389992564@qq．com，Tel：13554327015
通讯作者（Corresponding author）：周广生，E-mail：zhougs@mail．hzau．edu．cn
