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土壤压砂保水处理含水率对西瓜生产潜力的影响

ISSN号：1001-0009
期刊名称：《北方园艺》
时间：0
分类：S651.606.1[农业科学—果树学;农业科学—园艺学]
作者机构：宁夏大学土木与水利工程学院,宁夏节水灌溉与水资源调控工程技术研究中心,教育部旱区现代农业水资源高效利用工程研究中心,宁夏银川750021
相关基金：宁夏大学自然基金资助项目(NDZR10-45);教育部2010年度“长江学者和创新团队发展计划”创新团队资助项目(IRT1067);国家自然科学基金资助项目(51169021)

关键词：压砂, 保水, 生产潜力, 西瓜, gravel-mulched, moisture conservation, potential productivity, watermelon

中文摘要：

以西瓜为试材,针对压砂保墒问题,选择压砂时期和灌溉定额作为研究因素,采用对比试验方法研究了压砂保墒效果及其种植西瓜的生产潜力。结果表明：压砂覆盖能够有效保持土壤水分,上年雨季前压砂与雨季后压砂相比较,播种初期前者处理土壤质量含水率可达10.8%以上,而后者仅为8.9%;补水条件下前者比后者处理西瓜纵径大2.8cm,西瓜横径大3.1cm,未补水条件下前者比后者处理西瓜纵径大3.9cm,西瓜横径大2.7cm;补水条件下,前者处理西瓜产量为12 301.0kg·hm~（-2）,后者处理西瓜产量为7 549.1kg·hm~（-2）,未补水条件下,前者处理西瓜产量为6 723.3kg·hm~（~（-2））,后者处理西瓜产量为3 829.5kg·hm~（-2）,可见,压砂保水能够明显提高西瓜生产潜力。

英文摘要：

Taking watermelon as test material,aiming at the problem of gravel-mulched soil moisture conservation,selecting the gravel-mulched time and irrigation norm as study factors,the comparison experimental method was adopted and the gravel-mulched soil moisture conservation and potential productivity of watermelon was studied.The results indicated that it was efficacious for holding soil moisture by gravel-mulched,comparing mulched gravel before rainy season last year and mulched gravel behind rainy season last year,the former treatment soil moisture content was more than 10.8%,but,the later treatment just 8.9%;the vertical diamete increased 2.8cm,transverse diamete increased 3.1cm,under supplementary irrigation condition,the former treatment compared with the latter treatment,and when no supplementary irrigation condition,the vertical diamete increased 3.9cm,transverse diamete increased 2.7cm;the yield of the former treatment watermelon was 12 301.0kg·hm~（-2）,but the latter treatment was 7 549.1kg·hm~（-2）,under supplementary irrigation condition,the yield of the former treatment watermelon was 6 723.3kg·hm~（-2）,but the latter treatment was 3 829.5kg·hm~（-2）,under no supplementary irrigation condition,thus there was obvious effect for improved watermelon yield by holded soil moisture in gravel-mulched.

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