柳枝稷種植年限對(duì)土壤鹽分離子的影響
[Abstract]:In order to find out the effect of the energy plant switchgrass on the improvement of saline-alkali soil, in 2014-2015, under the field condition of Xidatan Salt and Alkali Land improvement Test Station of Ningxia University, three different planting years of switchgrass (T1T3 + T5) were set up in Xidatan, Ningxia University. The effect of switchgrass on salt ions in saline-alkali soil was studied by using saline-alkali wasteland of nearby uncultivated switchgrass as control (CK),. The results showed that the effect of switchgrass on soil salt ions increased with the increase of planting years, and the contents of Na~, SO_4~ (2-) and Cl~- in soil decreased with the increase of planting years. T5 treatment of switchgrass was compared with CK at the late stage of growth and development of switchgrass. The contents of Na~, SO_4~ (2-) and Cl~- decreased by 52.64% and 63.68%, respectively. The contents of Ca~ (2) and Mg~ (2) in soil were positively correlated with the planting years of switchgrass. The contents of Ca~ (2) and Mg~ (2) in T5 treatment of switchgrass at the late stage of growth and growth of switchgrass were increased by 2.22 ~ 48.08 compared with CK, respectively. Under the experimental conditions, the salt ions such as Na~, SO_4~ (2-) and Cl~- in soil were decreased most obviously after 5 years of cultivation of switchgrass.
【作者單位】: 寧夏大學(xué)環(huán)境工程研究院;寧夏大學(xué)農(nóng)學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(31560361) 寧夏自治區(qū)級(jí)大學(xué)生創(chuàng)新創(chuàng)業(yè)訓(xùn)練計(jì)劃項(xiàng)目(20150130)
【分類號(hào)】:S156.4
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