施肥对天然马尾松次生幼林针叶养分的影响

Effect of fertilizer on foliar nutrient content in natural secondary masson pine

通过对天然次生马尾松幼林施肥样地针叶养分含量的定位研究 ,结果表明 ,施肥具有显著促进或抑制天然马尾松次生幼林针叶养分含量的作用 ,其中施用尿素能促进针叶N的含量 ,也具有显著促进针叶Mg的量 ;施用过磷酸钙具有显著提高针叶P、Ca、Mg的含量 ;施用硫酸钾则具有提高针叶含K量的作用 ,同时也主要还是抑制针叶Mg的量。以N2、P2。

This paper deals with foliar nutrient content in fixed-position of the plots of natural secondary Masson pine after fertilization The results are as follows:Fertilizer significantly increased or decreased foliar nutrient contents Among these fertilizers, urea significantly increased the content of foliar N,and Mg Calcium phosphate increased foliar P,Ca,and Mg Potassium sulfate increased foliar K but decreased foliar Mg The better effects came from the treatments of using more N2,P2 and K2