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首页> 外文期刊>Australian Journal of Crop Science >Physical properties of Rhodic Hapludox (Oxisol) soil under different oat managements of integrated crop-livestock system
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Physical properties of Rhodic Hapludox (Oxisol) soil under different oat managements of integrated crop-livestock system

机译：农作物-畜牧综合系统不同燕麦管理下根瘤菌土壤的物理性质

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摘要

The current study aimed at the effects of residual straw deposition from cultivation of white oat (Avena sativa) on physical properties of a Rhodic Hapludox (Oxisol) soil during fall-winter (2009 and 2011) under an integrated crop–livestock system (ICLS). The experiment was implemented at field condition in a factorial scheme on a randomized blocks design with three replications. Six white oat managements were evaluated: (1) grazing of 10 cm plant residue height from the soil; (2) grazing of 20 cm plant residue height from the soil; (3) cut for haymaking with 10 cm residue height from the soil; (4) cut for haymaking with 20 cm height from soil; (5) white oat growth without grazing or cut of subsequent summer growth in no-tillage system; (6) white oat growth without grazing or cut with subsequent summer growth in conventional tillage. After the white oat management, soybean and corn were grown in the summers of 2009 and 2010, respectively. The residual straw of white oat was quantified before the summer crop sowing. The macroporosity, microporosity, total porosity and soil bulk density were evaluated in layers of 0-10 and 11-20 cm deep after each growth. The results showed an increase in macroporosity. A decrease was also observed in microporosity and the soil bulk density in white oat management under conventional tillage. However, there was no difference in total porosity. There was an increase in macroporosity and soil total porosity in the white oat management under no tillage during the successive crops (white oat in the winter/summer growth) (2.5 years). The adoption of livestock-farming system by the farmers with white oat growth during fall- winter for grazing or cut for haymaking with 10 or 20 cm residue height from soil did not change the physical properties of the Rhodic Hapludox (Oxisol).
机译：当前的研究旨在研究在作物-畜牧综合系统（ICLS）的秋冬（2009年和2011年）种植白燕麦（苜蓿（Avena sativa））时残留的秸秆对Rhodic Hapludox（Oxisol）土壤的物理特性的影响。 。实验是在现场条件下以阶乘方案在具有三个重复的随机区组设计上实施的。评估了六种白燕麦处理方法：（1）从土壤放牧10厘米高的植物残渣; （2）从土壤放牧20厘米高的植物残渣; （3）从土壤残渣高10厘米处割草。 （4）割去距土壤20厘米高的干草; （5）免耕系统中白燕麦的生长没有放牧或随后的夏季生长的减少; （6）在常规耕作中白燕麦生长无放牧或割裂，随后在夏季生长。白燕麦管理之后，大豆和玉米分别在2009年和2010年夏季种植。在夏季作物播种之前，对白燕麦的残留秸秆进行定量。每次生长后，在0-10和11-20 cm深的层中评估大孔隙度，微孔隙度，总孔隙度和土壤容重。结果显示大孔隙度增加。在常规耕作下，白燕麦管理中的微孔性和土壤容重也有所下降。但是，总孔隙率没有差异。在连续耕作的免耕期（冬/夏季生长的白燕麦）（2.5年）下，白燕麦管理的大孔隙度和土壤总孔隙度增加。秋冬季生长白燕麦的农民采用牲畜养殖系统放牧或从土壤中残留高度为10或20 cm的干草用于割草，但这并未改变Rhodic Hapludox（Oxisol）的物理特性。

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