accumulation of salt in the surface soil
自返式温盐深剖面仪 free falling STD profilinge system
四苯硼钠络盐返滴定法 back titration using NaPTB
自返式温盐深截面仪 free falling std profilinge system
·2,447,543篇论文数据，部分数据来源于NoteExpress
小麦生长全程覆盖地膜有明显的防返盐作用，但产量降低。
If the soil was mulched for the whole growth period of wheat salinization would be controlled but the yield of wheat would decline.
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