种植绿肥作物对河套灌区盐碱土改良效果研究

doi:10.3969/j.issn.2096-1197.2019.06.07

Abstract

Abstract: In order to explore the improvement effect of green manure crops on saline soil,this paper takes the saline-alkali soil in Hetao Area of Inner Mongolia as the research subject.Two species of leguminous green manure crops,Sesbania cannabina and Melilotus suaveolens,were used in the field experiments.The results showed that：planting two kinds of green manure crops could reduce the soil bulk density,the soil porosity,and the soil nutrient content.After planting Sesbania cannabina,the soil bulk density decreased by 4.08% and the total porosity increased by 5.08%.The soil organic matter,the total nitrogen,the alkali-hydrolyzable nitrogen,the available phosphorus,and the available potassium increased by 49.0%-49.4%,36.8%-68.4%,40.7%-43.8%,36.7%-44.8%,and 26.2%-36.5%,respectively.Therefore,planting green Sesbania cannabina and Melilotus suaveolens in Hetao irrigation area could noticeably improve the saline soil physical structure,reduce the salt level,and increase the soil organic matter,the total nitrogen,and the available nutrients;the effect of planting Sesbania cannabina on soil improvement was greater than that of planting Melilotus suaveolens.

Key words: Green manure crops, Saline-alkali soil, Biological improvement, Hetao Irrigation Area

CLC Number:

S646

JING Yupeng, ZHANG Jianzhong, LI Xiuping, DU Erxiao, ZHAO Qiang, BAI Yongxing, CHENG Qiang, LIU Mei, YI Fengyan, ZHAO Peiyi. Study on the effect of planting green manure crops on the improvement of Saline-Alkali soil in Hetao Irrigation Area[J].Journal of Northern Agriculture, 2019, 47(6): 42-46.

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Study on the effect of planting green manure crops on the improvement of Saline-Alkali soil in Hetao Irrigation Area

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