硫对油菜产量和抗逆性的影响

被引:9
作者
秦光蔚
梁永超
周祥
孙长峰
刘荣根
机构
[1] 江苏盐城市农业局土肥站
[2] 南京农业大学资源与环境学院!农业部作物生长调控重点实验室
[3] 江苏建湖县农业局土肥站
[4] 江苏大丰市农业局土肥站
关键词
潮土; 油菜; 土壤有效硫; 缺硫;
D O I
暂无
中图分类号
S143.7+1 [非金属微量元素肥料]; S565.4 [油菜籽(芸薹)];
学科分类号
090101 ; 0901 ;
摘要
通过田间小区试验 ,研究了施用硫肥对油菜的生长、产量构成因素和抗逆性的影响。结果表明 ,苏北建湖和大丰的潮土尽管土壤有效硫测定值超过临界值 ,但是 ,施用硫肥显著促进油菜的生长发育 ,提高油菜的株高、叶面积、绿叶数等生物学参数和产量。与对照相比 ,施用硫肥处理的分枝数、每株角果数、每角粒数均显著增加 ,但千粒重无显著差异。施用硫肥后植株对冻害和菌核病的抵抗力增强。本研究结果表明 ,对油菜这类需硫量大的作物 ,现有的土壤有效硫临界值不能准确反映其对硫肥的需要 ,其缺硫指标要进一步研究
引用
收藏
页码:36 / 39
页数:4
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