Effect of different tillage practices on soil physical properties under wheat in semi-arid environment
Effect of different tillage practices on soil physical properties under wheat in semi-arid environment
复制标题
半干旱环境下不同耕作方式对小麦土壤物理性质的影响
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Z. Shah
中科院分区：
文献类型：
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作者：
Muhammad Amin;M. Khan;M. T. Jan;Masood;J. A. Tariq;M. Hanif;Z. Shah
为研究半干旱地区小麦灌溉条件下不同耕作方式对粉质粘壤土物理性质的影响，于2009-10年和2010-2011年在巴基斯坦白沙瓦农业大学研究场进行了田间试验，耕作方式包括两次耕作(TC-2)、凿式犁(CR)、翻耕(MR)、圆盘犁(DR)和一次耕作(TCR)5个处理，除第一个处理外，每个处理都有一个旋转机。记录了土壤含水率、容重和土壤渗透阻力。结果表明，耕作措施对0~20 cm和20~40 cm两种土层的土壤含水率、土壤渗透阻力和容重均有显著影响(p<；0.05)。土壤含水率最高，容重最低，土壤渗透阻力最小。与第一年相比，第二年土壤物理条件总体上随着土壤保持水分的增加而改善，而土壤容重和土壤渗透阻力与第一年相比有所下降。这些结果表明，在半干旱环境下，深耕(凿犁、翻板犁)的耕作效果优于浅耕(耕整机)，可提高土壤保水性能，降低土壤容重和渗透阻力。
To study the effect of different tillage practices on physical properties of a silty clay loam soil under irrigated wheat in a semi-arid environment, a field experiment was conducted at the research farm of the University of Agriculture Peshawar, Pakistan during 2009-10 and 2010-2011, The tillage practices consisted of five treatments i.e. tine cultivator twice (TC-2), chisels plow (CR), moldboard plow (MR), disk plow (DR) and tine cultivator once (TCR), each followed by a rotavator except the first treatment. Soil moisture content, bulk density and soil penetration resistances were recorded. The results showed that tillage practices had significant (p < 0.05) effect on soil moisture content, soil penetration resistance and bulk density at both soil depths (0-20 cm, 20-40 cm). The highest soil moisture content and lowest bulk density or soil penetration resistance were recorded for soil tilled with chisel plow or moldboard plow at both soil depths. Soil physical conditions were generally improved with time as moisture conservation in soil increased while soil bulk density and soil penetration resistance decreased at both soil depths in second year as compared to first year of study. These results suggested that deep tillage practices (chisel plow, moldboard plow) performed better than shallow tillage practices (tine cultivator), and hence is recommended to improve soil moisture conservation and reduce both soil bulk density and penetration resistance under semi-arid environment.