摘要
采用土培试验研究了不同氮钙营养配合施用对菠菜产量、钙含量以及土壤钙含量的影响。结果表明,在本试验条件下,当氮钙用量分别为0.2 g/kg和0.3 g/kg时,菠菜的生物量最高,叶片钙含量最高,土壤水溶性钙、交换性钙和有效态钙含量较高。
The soil culture was used to study the effects of combined application of nitrogen and calcium on yield, calcium content of spinach and calcium content in soil. The results showed that under the experi- mental conditions, when the application rates of N and Ca were 0. 2 g/kg and 0.3 g/kg respectively, the spinach biomass and Ca content of leaves were the highest and the contents of water - soluble Ca, exchangeable Ca and available Ca were higher in soil.
出处
《山东农业科学》
2008年第9期51-54,共4页
Shandong Agricultural Sciences
基金
山东省自然科学基金项目(Y2007D62)
山东省农业科学院博士科研启动基金项目(2006YBS027)
关键词
氮钙营养
产量
水溶性钙
交换性钙
有效态钙
棕壤
Nitrogen and calcium nutrition
Yield
Water - soluble calcium
Exchangeable calcium
Available calcium
Brown soil
