钼肥对农牧交错带豆科作物增产的重要意义

The important significance of applying molybdenum fertilizer in increasing yield of leguminous crops in agriculturalpastoral economy area

摘要: 对农牧交错带典型地区内蒙古多伦县不同类型土壤施钼试验表明，该地区绝大多数土壤有效态钼含量低，钼是豆科植物根瘤菌中固氮酶的重要组分，该区种植豆科作物面积大，施钼对豆科作物增产效果极为显著，蚕豆增产率为30.2%～33.7%，芸豆增产率为9.4%～12.4%，现已大面积推广，这对我国大西北地区的经济发展具有重要意义。

Abstract: The experiments of applying molybdenum fertilizer have been carried out in a typical area of agricultural－pastoral economy in Duolun County,Inner Mongolia.It is shown that content of available molybdenum in most of soils is low in that area.Molybdenum is an important element for leguminous crops to be utilized by nodule bacteria in nitrogen fixation and the crops are planted in a large area in that region.The yields of broad bean and kidney bean are increased by 33.7%～30.2% and 12.4%～9.4% by applying molybdenum.The practice followed in a large area will have major significance to the economic development in Northwest China.