Characteristics of Soil Physicochemical Properties of Plant Protection System for Salt Lake in Semi-arid Wind-sand Grassland Area

doi:10.13304/j.nykjdb.2022.0674

Abstract

Abstract:

In order to investigate the effect of plant protection measures on the improvement of the soil in semi-arid wind-sand grassland area， the plant protection system of Chagannur Salt Lake was used as the research object， and the physical and chemical properties of the soil in different areas were measured by the method of field investigation combined with indoor experiment， and the changes of soil salinity， soil pH， soil particle size composition， soil organic matter and nitrogen， phosphorus and potassium content in 0-30 cm depth were analyzed. The results showed that，20 years after the construction of the plant protection system in Chagannur Salt Lake， the initial highly saline and alkaline soil environment had changed significantly under the synergistic effect of the protection zone to block wind erosion materials and plants to improve the soil. Compared with the dried lake center， the pH of each site in the plant protection system decreased to different degrees， and the soil salinity in the alkaline shield decreased by 75.34%； the clay and powder content of the soil in the alkaline shield increased significantly， increasing by 51.60% and 22.14% respectively compared with the dried lake center， and the coarse sand content decreased by 72.06% compared with the dried lake center.The contents of quick-acting potassium， quick-acting phosphorus and organic matter of the soil in the alkaline shield were the highest， which were 86%， 39% and 55% of the dry lake center， respectively. The quick-acting nitrogen content of white thorn bushes in the transition zone was the highest， which was 28% of the dry lake center. Overall each nutrient content showed a significant correlation （P<0.05） with clay and powder grains. After 20 years of construction， the content of quick-acting potassium， quick-acting phosphorus and organic matter of the soil in the alkali plant protection zone had increased significantly compared with that at the beginning of the construction period， indicating that the plant protection system has a significant improvement effect on the soil. The research results could provide data support for the evaluation of the protective effect of the plant protection system in the salt lake， and could provide scientific basis for the control of wind erosion and regional vegetation restoration and reconstruction of the dry salt lake in the semi-arid sandy steppe area.

Key words: semi-arid sandy steppe zone, plant protection system, soil physical and chemical properties, Chagannur Salt Lake

摘要：

为探究植物防护措施对半干旱风沙草原区土壤的改良效应，以查干淖尔盐湖植物防护体系为研究对象，采用野外调查结合室内试验的方法，测定不同区域土壤理化性质，分析0—30 cm深度土壤含盐量、土壤酸碱度、土壤粒径组成、土壤有机质和氮磷钾含量的变化。结果表明，查干淖尔盐湖植物防护体系营造建设20年后，在防护带阻挡风蚀物质和植物改善土壤的协同作用下，原有高盐强碱土壤环境出现了显著变化。与干涸湖心相比，植物防护体系内各样地pH均有不同程度的降低，碱蓬防护带内土壤含盐量降低75.34%；碱蓬防护带内土壤粘粒和粉粒含量增幅明显，较干涸湖心分别增加51.60%和22.14%，粗砂含量较干涸湖心降低72.06%；碱蓬防护带内土壤速效钾、速效磷、有机质含量较高，分别是干涸湖心的86%、39%、55%；过渡带白刺灌丛速效氮含量较高，为干涸湖心的28%。总体上各养分含量与粘粒和粉粒呈显著相关（P<0.05）。历经20年的营建，碱蓬防护带内土壤速效钾、速效磷、有机质含量较建设初期明显增长，表明植物防护体系对土壤具有明显的改良作用。研究成果为盐湖植物防护体系防护效应评价提供数据支撑，并为半干旱风沙草原区干涸盐湖风蚀控制和区域植被恢复重建提供科学依据。

关键词: 半干旱风沙草原区, 植物防护体系, 土壤理化性质, 查干淖尔盐湖

CLC Number:

S714.2

Jingjie GUO, Xiaomeng REN, Zhongju MENG, Tao WANG, Shuai QI, Jiajia SONG, Baomengkenashun, Shengli HAN. Characteristics of Soil Physicochemical Properties of Plant Protection System for Salt Lake in Semi-arid Wind-sand Grassland Area[J]. Journal of Agricultural Science and Technology, 2024, 26(1): 182-192.

郭靖捷, 任晓萌, 蒙仲举, 王涛, 祁帅, 宋佳佳, 宝孟克那顺, 韩胜利. 半干旱风沙草原区盐湖植物防护体系土壤理化性状特征[J]. 中国农业科技导报, 2024, 26(1): 182-192.

Figures/Tables 10

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土层深度 Soil depth/cm	样地 Sampling location	粘粒 Clay/%	粉粒 Silt/%	极细砂 Very fine sand/%	细砂 Fine sand/%	中砂 Medium sand/%	粗砂 Coarse sand/%	极粗砂 Very coarse sand/%
0—10	干涸湖心 DLC	17.17±1.02 b	36.36±5.16 b	0.05±0.03 d	0.00±0.00 c	3.52±0.17 d	33.39±4.20 b	9.51±1.13 b
	碱蓬防护带 AS	26.03±2.15 a	44.41±3.41 a	4.41±0.31 a	4.62±0.75 b	9.43±1.74 c	9.33±6.21 c	1.75±2.45 d
	盐碱草滩地 SG	3.57±0.78 c	11.68±0.51 c	3.57±0.26 b	5.59±0.11 b	26.37±0.85 b	44.01±1.47 b	5.22±0.69 c
	白刺灌丛 WTB	1.69±0.20 c	6.83±0.15 cd	1.19±0.03 c	23.45±1.27 a	53.73±1.22 a	11.47±2.15 c	1.64±0.17 d
	沙地风蚀坑 SWEP	2.70±1.52 c	5.03±2.54 d	0.00±0.00 d	0.37±0.21 c	2.43±0.27 d	71.38±4.05 a	18.08±0.26 a
10—20	干涸湖心 DLC	27.26±6.86 a	59.72±1.50 b	0.45±0.19 c	0.03±0.03 c	0.53±5.27 c	11.12±7.74 b	1.89±3.28 b
	碱蓬防护带 AS	35.84±5.30 a	61.26±3.92 a	0.46±0.09 c	0.00±0.00 c	1.45±1.29 d	0.99±1.08 b	0.00±0.00 b
	盐碱草滩地 SG	7.27±1.18 b	29.76±1.39 b	15.51±0.12 a	21.83±1.67 b	13.56±1.63 b	12.07±0.11 b	0.00±0.00 b
	白刺灌丛 WTB	2.05±0.22 b	11.15±0.14 a	2.03±0.05 b	33.04±0.74 a	38.80±0.60 a	10.87±1.32 b	2.05±0.50 b
	沙地风蚀坑 SWEP	5.47±0.75 b	10.19±0.31 a	0.00±0.00 c	0.00±0.00 c	0.00±0.00 c	51.40±1.47 a	32.93±0.44 a
20—30	干涸湖心 DLC	25.14±4.94 a	55.56±5.02 a	5.30±0.08 c	0.00±0.00 c	0.00±0.00 c	0.00±0.00 b	0.00±0.00 b
	碱蓬防护带 AS	32.27±4.76 a	60.60±4.82 a	7.13±0.07 c	0.00±0.00 c	0.00±0.00 c	0.00±0.00 b	0.00±0.00 b
	盐碱草滩地 SG	1.94±0.23 b	9.35±0.71 b	8.38±0.49 a	24.97±1.58 a	20.65±2.60 b	29.37±4.32 b	5.34±1.06 b
	白刺灌丛 WTB	1.76±0.15 b	5.34±0.20 bc	1.30±0.07 b	13.16±0.44 b	49.59±1.06 a	26.59±1.61 b	2.26±0.54 b
	沙地风蚀坑 SWEP	0.86±0.16 b	1.93±0.12 c	0.17±0.04 c	2.64±0.06 c	11.24±0.48 c	69.86±0.63 a	13.28±1.01 a

土层深度 Soil depth/cm	样地 Sampling location	粘粒 Clay/%	粉粒 Silt/%	极细砂 Very fine sand/%	细砂 Fine sand/%	中砂 Medium sand/%	粗砂 Coarse sand/%	极粗砂 Very coarse sand/%
0—10	干涸湖心 DLC	17.17±1.02 b	36.36±5.16 b	0.05±0.03 d	0.00±0.00 c	3.52±0.17 d	33.39±4.20 b	9.51±1.13 b
	碱蓬防护带 AS	26.03±2.15 a	44.41±3.41 a	4.41±0.31 a	4.62±0.75 b	9.43±1.74 c	9.33±6.21 c	1.75±2.45 d
	盐碱草滩地 SG	3.57±0.78 c	11.68±0.51 c	3.57±0.26 b	5.59±0.11 b	26.37±0.85 b	44.01±1.47 b	5.22±0.69 c
	白刺灌丛 WTB	1.69±0.20 c	6.83±0.15 cd	1.19±0.03 c	23.45±1.27 a	53.73±1.22 a	11.47±2.15 c	1.64±0.17 d
	沙地风蚀坑 SWEP	2.70±1.52 c	5.03±2.54 d	0.00±0.00 d	0.37±0.21 c	2.43±0.27 d	71.38±4.05 a	18.08±0.26 a
10—20	干涸湖心 DLC	27.26±6.86 a	59.72±1.50 b	0.45±0.19 c	0.03±0.03 c	0.53±5.27 c	11.12±7.74 b	1.89±3.28 b
	碱蓬防护带 AS	35.84±5.30 a	61.26±3.92 a	0.46±0.09 c	0.00±0.00 c	1.45±1.29 d	0.99±1.08 b	0.00±0.00 b
	盐碱草滩地 SG	7.27±1.18 b	29.76±1.39 b	15.51±0.12 a	21.83±1.67 b	13.56±1.63 b	12.07±0.11 b	0.00±0.00 b
	白刺灌丛 WTB	2.05±0.22 b	11.15±0.14 a	2.03±0.05 b	33.04±0.74 a	38.80±0.60 a	10.87±1.32 b	2.05±0.50 b
	沙地风蚀坑 SWEP	5.47±0.75 b	10.19±0.31 a	0.00±0.00 c	0.00±0.00 c	0.00±0.00 c	51.40±1.47 a	32.93±0.44 a
20—30	干涸湖心 DLC	25.14±4.94 a	55.56±5.02 a	5.30±0.08 c	0.00±0.00 c	0.00±0.00 c	0.00±0.00 b	0.00±0.00 b
	碱蓬防护带 AS	32.27±4.76 a	60.60±4.82 a	7.13±0.07 c	0.00±0.00 c	0.00±0.00 c	0.00±0.00 b	0.00±0.00 b
	盐碱草滩地 SG	1.94±0.23 b	9.35±0.71 b	8.38±0.49 a	24.97±1.58 a	20.65±2.60 b	29.37±4.32 b	5.34±1.06 b
	白刺灌丛 WTB	1.76±0.15 b	5.34±0.20 bc	1.30±0.07 b	13.16±0.44 b	49.59±1.06 a	26.59±1.61 b	2.26±0.54 b
	沙地风蚀坑 SWEP	0.86±0.16 b	1.93±0.12 c	0.17±0.04 c	2.64±0.06 c	11.24±0.48 c	69.86±0.63 a	13.28±1.01 a

指标 Index	粘粒 Clay	粉粒 Silt	极细砂 Very fine sand	细砂 Fine sand	中砂 Medium sand	粗砂 Coarse sand	极粗砂 Very coarse sand
pH	0.69^**	0.76^**	0.28	-0.36	-0.62^*	-0.42	-0.38
速效氮 Available nitrogen	-0.05	-0.08	-0.23	-0.02	0.28	-0.03	-0.10
速效磷 Available phosphorus	0.62^*	0.58^*	-0.27	-0.43	-0.40	-0.29	-0.22
速效钾 Available potassium	0.82^**	0.86^**	0.03	-0.36	-0.33	-0.67^**	-0.62^*
有机质 Organic matter	0.45	0.47	-0.04	-0.18	0.02	-0.46	-0.49

指标 Index	粘粒 Clay	粉粒 Silt	极细砂 Very fine sand	细砂 Fine sand	中砂 Medium sand	粗砂 Coarse sand	极粗砂 Very coarse sand
pH	0.69^**	0.76^**	0.28	-0.36	-0.62^*	-0.42	-0.38
速效氮 Available nitrogen	-0.05	-0.08	-0.23	-0.02	0.28	-0.03	-0.10
速效磷 Available phosphorus	0.62^*	0.58^*	-0.27	-0.43	-0.40	-0.29	-0.22
速效钾 Available potassium	0.82^**	0.86^**	0.03	-0.36	-0.33	-0.67^**	-0.62^*
有机质 Organic matter	0.45	0.47	-0.04	-0.18	0.02	-0.46	-0.49

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