作物定植提升滨海盐土质量的研究——以覆盖条件下的甜高粱定植为例

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Abstract To investigate the effect of sorghum planting on coastal saline soil physicochemical properties, biological characteristics and surface biomass, a field experiment was carried out during single growth period (from middle April to middle August) in coastal reclamation area. The results showed that sorghum planting significantly (P<0.05) improved the soil physicochemical properties. Compared with NP (without covering and sorghum planting) and NPC (only covering), salt content and bulk density were significantly (P<0.05) decreased, while the water content, total porosity, maximum moisture capacity, field water capacity and organic matter content were significantly (P<0.05) increased in the treatment of PC (covering and sorghum planting). The populations of culturable microorganism (soil bacteria, fungi, actinomycetes, cellulose decomposition bacteria and nitrogen fixation bacteria) were significantly (P<0.05) increased in the PC treatment. Before sorghum harvest, soil respiration intensity in the PC treatment was significantly (P<0.05) increased by 35.71% and 26.67%, respectively, as compared with NP and NPC. Surface biomass in the PC was 3.86 and 3.16 times higher than that of NP and NPC, respectively. In conclusion, sorghum planting efficiently improved soil quality and biological function, which provided an ecological and feasible way for agricultural utilization of land in new reclamation area.

Key words： saline-alkali soil colonization soil microorganism surface biomass

Received: 15 October 2020

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X53

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	Articles by authors
	CHEN Li-hua
	SU Wei-xia
	YAO Yu-tian
	GUO Shi-wei
	HAN Rui
	SHANG Hui
	ZHOU Long-xiang
	WANG Dong
	ZHANG Feng-ge

Cite this article:

CHEN Li-hua,SU Wei-xia,YAO Yu-tian等. Crops planting on improvement of saline soil in coastal reclamation area: A case of sorghum planting under covering conditions[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(5): 2336-2342.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I5/2336

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