绿肥填闲种植对旱作冬小麦农田耕层土壤物理性质的影响

李超; 王俊; 邢文超; 张少宏; 柳瑞

doi:10.13961/j.cnki.stbctb.2022.02.015

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绿肥填闲种植对旱作冬小麦农田耕层土壤物理性质的影响

试验研究

- 绿肥填闲种植对旱作冬小麦农田耕层土壤物理性质的影响
- Effects of Green Manure on Physical Properties of Topsoil in a Dryland Winter Wheat Field
- 水土保持通报 2022年42卷第2期页码：107-113
- 作者机构：
  
  1. 西北大学城市与环境学院,陕西,西安,710127
  2. 陕西省地表系统与环境承载力重点实验室,陕西,西安,710127
  3. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
  
  中国科学院西部之光“西部引进人才”项目;陕西省农业科技创新驱动项目(NYKJ-2021-XA-005)
- DOI：10.13961/j.cnki.stbctb.2022.02.015
  中图分类号： S152.3;S152.5;S152.7
- 纸质出版：2022
- 稿件说明：
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李超, 王俊, 邢文超, 等. 绿肥填闲种植对旱作冬小麦农田耕层土壤物理性质的影响[J]. 水土保持通报, 2022,42(2):107-113.

Li Chao, Wang Jun, Xing Wenchao, et al. Effects of Green Manure on Physical Properties of Topsoil in a Dryland Winter Wheat Field[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 107-113.
李超, 王俊, 邢文超, 等. 绿肥填闲种植对旱作冬小麦农田耕层土壤物理性质的影响[J]. 水土保持通报, 2022,42(2):107-113. DOI： 10.13961/j.cnki.stbctb.2022.02.015.

Li Chao, Wang Jun, Xing Wenchao, et al. Effects of Green Manure on Physical Properties of Topsoil in a Dryland Winter Wheat Field[J]. Bulletin of Soiland Water Conservation, 2022, 42(2): 107-113. DOI： 10.13961/j.cnki.stbctb.2022.02.015.

摘要

[目的] 探讨绿肥填闲种植对旱作冬小麦农田耕层土壤物理性质的影响，为其在黄土高原旱作农业区的推广提供科学依据。[方法] 基于4 a田间定位试验，研究了夏闲期种植长武怀豆、苏丹草、怀豆/苏丹草混播以及裸地休闲(CK)对旱作冬小麦收获期农田耕层(0—20 cm)土壤容重、孔隙度、持水量和团聚体的影响。[结果] 在0—10 cm土层，与CK相比，苏丹草和混播处理显著降低了土壤容重，怀豆，苏丹草和混播处理显著提高了土壤毛管孔隙度、总孔隙度、饱和持水量、毛管持水量、大团聚体(＞5 mm)所占比例和团聚体平均重量直径(MWD)；在10—20 cm土层，苏丹草处理大团聚体所占比例和MWD均显著高于CK。土壤容重与土壤有机碳含量呈显著负相关，毛管孔隙度和团聚体平均重量与绿肥生物量呈显著正相关，而土壤总孔隙度、饱和持水量和毛管持水量与绿肥生物量和土壤有机碳均呈显著正相关。[结论] 在黄土高原地区，夏闲期单播种植长武怀豆、苏丹草及混播均能显著改善耕层土壤物理性质，综合来看，苏丹草单播的效果优于长武怀豆单播和二者混播。

Abstract

[Objective] The effects of green manure on soil physical properties of dryland winter wheat field were investigated in order to provide scientific basis for its popularization in dry farming area of Loess Plateau. [Methods] Based on a 4-year winter wheat field experiment

the effects of planting Changwu soybean

Sudan grass

soybean/Sudan grass mixture and control with no cover crop (CK) on bulk density

porosity

water holding capacity

and aggregation in the cultivated soil layer at 0—20 cm depth during the harvest of dry winter wheat were studied in the Loess Plateau. [Results] At 0—10 cm depths

compared with CK

Sudan grass and mixture treatment significantly decreased soil bulk density. Soybean

Sudan grass and mixture treatment significantly increased soil capillary porosity

total porosity

saturated water capacity

capillary water holding capacity

the proportion of large aggregates (＞ 5 mm)

and aggregate mean weight diameter (MWD) (p＜0.05). At 10—20 cm soil depth

Sudan grass treatment had the higher proportion of large aggregates and MWD than CK. Soil bulk density was negatively correlated with soil organic carbon

while soil total porosity

saturated and capillary water capacity were positively correlated to cover crop biomass and soil organ carbon. [Conclusion] In the Loess Plateau

top soil physical properties can be enhanced by monoculture planting Changwu soybean

Sudan grass

or mixture sowing during summer fallow

especially monoculture of Sudan grass.

关键词

Keywords

references

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