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.
出处
《西北师范大学学报（自然科学版）》
CAS
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)
关键词
红豆草
春小麦
可溶性盐分
抑盐效应
Onobrychis viciaefolia
Triticum aestivum
soluble salt
effect of salt restraint
