氮、磷、钾肥对豌豆籽粒产量及根腐病发病程度的影响

两年的盆栽试验及田间试验结果表明,磷素无论单施或与氮、钾配合施用,对豌豆的长势,籽粒产量和根腐病发病程度的减轻均有良好的影响,而钾素的影响不佳,氮素的影响居中。究其原因主要是由于供试土壤黄绵土全磷的贮备和速效磷的含量低,而钾素的供应丰富所致。

Effects of Nitrogenous,Phosphorous and Potassium Fertilizers on Kernel Yield and Developmental Level of Root Rod Disease in Pea

The results of pot and field experiments for two years showed that there was a positive effect of fertilizing pea (Pisum sativum) with only phosphorous fertilizer or the fertilizer combining with nitrogenous or potassium fertilizer on the growth vigor, the kernel yield and the Root Rod disease development level in pea, The effect of nitrogenous fertilizer was in the middle, The potassium fertilizer had not any effect, It is suggested that the positive effect of using phosphorous fertilizer in the present study was due to the fact that the soil used was Yellow Mein soil which had low contents in total and available phosphorus, but had high content and supply in potassium.