Dynamic effects of deep ploughing combined with application of structural conditioner on moisture content of newly cultivated low hilly red soil

doi:10.16178/j.issn.0528-9017.20221076

Abstract

Abstract:

In order to explore the way to improve the water storage capacity of newly cultivated low hilly red soil dry land, three kinds of newly cultivated red soil dry land with different textures (sandy loam, clay loam and clay soil) were selected in central Zhejiang, and the effects of deep tillage combined with structural conditioner on soil water status were carried out. The experiment consisted of three treatments: control (shallow tillage), structural conditioner (shallow tillage+structural conditioner) and deep tillage combined with structural conditioner. The changes of water content and water storage capacity of 0-50 cm soil layer at different depths were dynamically observed. The results showed that deep ploughing combined with structural conditioner significantly reduced the bulk density of soil, and increased the number of soil water stability aggregates and water retention. The field water capacity of sand loam, clay loam and clay soil increased by 1.58%, 1.94% and 4.35%, respectively, compared with that of the control. The field water capacity of sand loam, clay loam and clay soil increased by 1.35%, 2.28% and 2.68%, respectively, compared with the control after deep tillage and structural conditioner. The soil water storage in the 20-50 cm soil layer in the dry season was significantly higher than that in the control. The water storage in sandy loam, clay loam and clay soil was 2.06%-12.16%, 1.73%-12.41% and 5.53%-23.62% higher than that in the control, respectively. The effect of deep tillage was most obvious in clay, and is relatively weak in sandy loam soil.

Key words: red soil, water storage capacity, structural conditioner, plough layer, physical character, bulk density

CLC Number:

S141
S156

CHI Yongqing, ZHANG Mingkui. Dynamic effects of deep ploughing combined with application of structural conditioner on moisture content of newly cultivated low hilly red soil[J]. Journal of Zhejiang Agricultural Sciences, 2024, 65(1): 230-234.

Figures/Tables 4

References 13

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质地	土壤名称	成土母质	黏粒含量/ (g·kg^-1)	砂粒含量/ (g·kg^-1)	砾石含量/ (g·kg^-1)	有机碳含量/ (g·kg^-1)	阳离子交换量/ (cmol·kg^-1)	pH值
砂壤土	红砂土	红砂岩	86	755	113	3.65	6.65	5.23
黏壤土	黄红泥土	泥页岩	265	368	22	6.68	8.89	5.28
黏土	黄筋泥	Q₂红土	403	355	15	5.24	10.87	5.02

质地	土壤名称	成土母质	黏粒含量/ (g·kg^-1)	砂粒含量/ (g·kg^-1)	砾石含量/ (g·kg^-1)	有机碳含量/ (g·kg^-1)	阳离子交换量/ (cmol·kg^-1)	pH值
砂壤土	红砂土	红砂岩	86	755	113	3.65	6.65	5.23
黏壤土	黄红泥土	泥页岩	265	368	22	6.68	8.89	5.28
黏土	黄筋泥	Q₂红土	403	355	15	5.24	10.87	5.02

试验土壤	处理	容重/(g·cm^-3)			>0.25 mm水稳定性团聚体/%			饱和导水率/(mm·d^-1)
试验土壤	处理	0~<20 cm	20~<35 cm	35~50 cm	0~<20 cm	20~<35 cm	35~50 cm	0~<20 cm	20~<35 cm	35~50 cm
砂壤土	对照	1.36 a	1.41 a	1.44 a	10.65 b	8.86 b	6.59 a	38.52 b	35.68 b	33.68 b
	结构调理剂	1.29 b	1.39 ab	1.45 a	43.25 a	10.24 a	7.25 a	42.68 a	37.95 ab	32.25 b
	深耕+结构调理剂	1.28 b	1.36 b	1.34 b	41.25 a	9.64 ab	6.59 a	41.42 a	39.87 a	38.42 a
黏壤土	对照	1.32 a	1.39 a	1.43 a	25.42 b	19.43 a	18.25 a	31.25 b	28.66 b	24.52 b
	结构调理剂	1.23 b	1.37 a	1.41 a	56.23 a	18.45 a	17.24 a	39.25 a	29.37 b	23.48 b
	深耕+结构调理剂	1.24 b	1.31 b	1.32 b	57.21 a	18.97 a	16.25 a	38.74 a	34.55 a	32.18 a
黏土	对照	1.35 a	1.42 a	1.47 a	49.85 b	46.58 a	43.52 a	23.41 b	17.52 c	12.42 b
	结构调理剂	1.32 b	1.39 ab	1.48 a	68.52 a	45.20 a	44.87 a	33.25 a	20.54 b	11.89 b
	深耕+结构调理剂	1.31 b	1.35 b	1.36 b	65.42 a	48.25 a	43.29 a	34.12 a	31.45 a	27.88 a

试验土壤	处理	容重/(g·cm^-3)			>0.25 mm水稳定性团聚体/%			饱和导水率/(mm·d^-1)
试验土壤	处理	0~<20 cm	20~<35 cm	35~50 cm	0~<20 cm	20~<35 cm	35~50 cm	0~<20 cm	20~<35 cm	35~50 cm
砂壤土	对照	1.36 a	1.41 a	1.44 a	10.65 b	8.86 b	6.59 a	38.52 b	35.68 b	33.68 b
	结构调理剂	1.29 b	1.39 ab	1.45 a	43.25 a	10.24 a	7.25 a	42.68 a	37.95 ab	32.25 b
	深耕+结构调理剂	1.28 b	1.36 b	1.34 b	41.25 a	9.64 ab	6.59 a	41.42 a	39.87 a	38.42 a
黏壤土	对照	1.32 a	1.39 a	1.43 a	25.42 b	19.43 a	18.25 a	31.25 b	28.66 b	24.52 b
	结构调理剂	1.23 b	1.37 a	1.41 a	56.23 a	18.45 a	17.24 a	39.25 a	29.37 b	23.48 b
	深耕+结构调理剂	1.24 b	1.31 b	1.32 b	57.21 a	18.97 a	16.25 a	38.74 a	34.55 a	32.18 a
黏土	对照	1.35 a	1.42 a	1.47 a	49.85 b	46.58 a	43.52 a	23.41 b	17.52 c	12.42 b
	结构调理剂	1.32 b	1.39 ab	1.48 a	68.52 a	45.20 a	44.87 a	33.25 a	20.54 b	11.89 b
	深耕+结构调理剂	1.31 b	1.35 b	1.36 b	65.42 a	48.25 a	43.29 a	34.12 a	31.45 a	27.88 a

时间/ 月	处理	砂壤土			黏壤土			黏土
时间/ 月	处理	0~<20 cm	20~<35 cm	35~50 cm	0~<20 cm	20~<35 cm	35~50 cm	0~<20 cm	20~<35 cm	35~50 cm
1	对照	10.41 a	11.87 b	9.56 b	16.58 a	18.25 b	15.23 b	19.42 b	20.25 b	15.25 b
	结构调理剂	12.41 a	12.85 ab	8.97 b	16.29 a	19.42 b	15.18 b	20.54 ab	20.65 b	16.28 ab
	深耕+结构调理剂	11.45 a	13.25 a	11.42 a	15.98 a	21.45 a	17.52 a	21.02 a	22.42 a	17.58 a
3	对照	12.79 b	12.87 b	10.68 b	18.25 b	19.87 c	14.98 b	21.54 a	21.45 b	16.21 b
	结构调理剂	14.52 a	13.04 b	11.87 ab	18.37 b	21.33 b	15.87 b	22.75 a	22.97 b	17.03 b
	深耕+结构调理剂	13.68 a	15.47 a	12.32 a	19.23 a	23.02 a	18.23 a	22.42 a	24.25 a	19.66 a
5	对照	14.56 a	16.58 b	13.35 b	20.18 a	22.56 c	16.38 b	24.25 b	22.85 c	15.68 c
	结构调理剂	14.14 a	17.68 ab	13.95 ab	21.09 a	24.98 b	17.45 b	26.14 ab	25.21 b	17.98 b
	深耕+结构调理剂	14.79 a	18.66 a	14.78 a	20.21 a	27.48 a	22.97 a	27.28 a	29.43 a	23.65 a
7	对照	12.45 b	15.88 b	13.41 b	21.56 a	23.68 c	17.98 b	26.34 b	24.18 c	16.39 c
	结构调理剂	12.23 b	18.02 a	13.52 b	20.68 a	26.87 b	18.23 b	28.05 ab	27.42 b	19.28 b
	深耕+结构调理剂	13.12 a	19.43 a	15.28 a	20.95 a	29.54 a	23.68 a	29.14 a	33.65 a	25.38 a
9	对照	11.33 a	13.87 c	12.65 b	18.54 a	21.45 c	16.98 b	22.15 c	23.14 c	17.24 b
	结构调理剂	11.03 a	15.02 b	11.52 b	19.54 a	24.01 b	17.03 b	24.24 b	25.71 b	18.65 b
	深耕+结构调理剂	10.76 a	17.76 a	13.14 a	18.89 a	26.74 a	22.05 a	26.43 a	30.97 a	24.13 a
11	对照	11.08 a	12.98 b	10.59 b	17.82 b	19.78 c	16.33 b	20.69 b	21.45 c	17.85 b
	结构调理剂	10.66 a	13.52 b	11.05 b	18.42 ab	22.61 b	17.28 b	21.73 ab	24.24 b	18.21 b
	深耕+结构调理剂	10.89 a	15.69 a	13.32 a	19.54 a	25.21 a	20.51 a	22.66 a	28.32 a	22.56 a