种植红豆草和春小麦对土壤可溶性盐分运移的影响  

Effect of salt restraint on planting Onobrychis viciaefolia and Triticum aestivum

作　　者：李昂[1] 蔺海明[2] 贾恢先[2] 

机构地区：[1]兰州城市学院城市经济系,甘肃兰州730030 [2]甘肃农业大学农学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2006年第3期78-81,85,共5页Journal of Northwest Normal University(Natural Science)

基　　金：国家科技攻关西部专项基金资助项目(2001BA901A33)

摘　　要：通过田间试验，测定了种植红豆草（Onobrychis viciaefolia）和春小麦（Triticum aestivum）对土壤可溶性盐分运移的影响．结果表明：不同绿色覆盖方式对0～20cm土层都具有明显的抑盐效应，随着地上生物量的增加，土壤表层的可溶性盐分下降幅度达16．4％～30．5％；在生育期内，红豆草的抑盐效应（0～20cm土层）较小麦强，红豆草使0～80cm土层脱盐率达23．4％，而小麦使0～80cm土层积盐率达14．2％；单作小麦收获后的空闲地．土壤表层盐分上升速度较裸地快．The effect of Onobrychis viciaefolia and Triticum aestivum on the content of soluble salt is studied by field experiment. The results show that in 0 ～ 20cm soil layer, green cover has obvious function of restraining salt, and with the increasing of biology quantity, the salt content within 20 cm is reduced by 16.4%～30.5%. During growing-term, the salt content within 80 cm is decreased by 23.4% through sowing Onobrychis viciaefolia, but it is increased by 14.2 % through sowing Triticum aestivum. After spring wheat is harvested, the rising-speed of soil salt content in wheat land is rapider than that in uncovered land.

关 键 词：红豆草 春小麦 可溶性盐分 抑盐效应 

分 类 号：S156.41[农业科学—土壤学]