摘要
试验阐明了在京郊土壤条件下施用硼、锌、钼肥对紫花苜蓿生长、品质和营养吸收的影响,为苜蓿的合理施肥提供了依据。结果表明:施用硼、锌和钼肥能够不同程度地提高苜蓿株丛数、改善结瘤、促进分枝、增加株高。微肥对产量的影响因土壤而异,当土壤有效锌、硼、钼含量分别低于1.8mg/kg、0.5mg/kg及0.1mg/kg时,施用微肥的增产效果明显。适当施用硼、锌、钼肥能够提高苜蓿粗蛋白质含量。苜蓿的吸氮量受硼、锌、钼肥影响显著,其中硼肥的作用最大,苜蓿的吸磷量受锌、钼的影响显著,吸钾量受硼、钼的影响显著。
Effects of Zn, B and Mo application on the growth, quality and nutrient uptake of alfalfa were investigated in Beijing Suburb, in order to obtain optimum fertilization practice. The results showed that application of Zn,B and Mo could increase plant intensity,number of nodules,number of branch shoots and plant height. Effects of Zn, B and Mo application on the hay yield were dependent on the soil available Zn, B, Mo contents. Suitable application of Zn, B and Mo could significantly increase hay yield and crude protein content (CP) of alfalfa when soil available Zn, B, Mo content was lower than 1.8, 0.5 and 0.1mg/kg, respectively. Application of Zn, B and Mo could significantly increase the N uptake. Zn and Mo application significantly affected P uptake and B and Mo application affected K uptake.
出处
《土壤肥料》
CSCD
北大核心
2003年第3期24-28,共5页
Soils and Fertilizers
