砂姜黑土吨粮田土壤肥力指标的研究

• 作 者: 施岗陵 谷昭川 杨保国 纪兆敏 张义祝
• 机 构: 山东农业大学土化系,山东农业大学土化系,山东农业大学土化系,山东农业大学土化系,山东农业大学土化系 泰安 271018,泰安 271018,泰安 271018,泰安 271018,泰安 271018
• 出 处: 中国农学通报
• 发表日期: 1993年05期
• 关键词: 砂姜黑土 吨粮 土壤肥力指标 农业技术措施 心土层 夏玉米 土壤养分供应 耕层深度 耕地土壤 玉米籽粒

试验结果表明,通过以改土培肥为中心的综合农业技术措施,可以稳定地在砂姜黑土上达到亩产吨粮的目标。作者认为砂姜黑土吨粮田的土壤肥力指标:耕层深度25cm左右,耕层容重1.2μg/cm~3左右,心土层容重<1.3g/cm~3,耕层总孔隙度55％左右,心土层孔隙度不低于50％,土壤有机质含量2％左右,土壤全N>0.1％,碱解N>100μg/g土。速效P>15μg/g土,速效K>150μg/g土。

The test results show that through the comprehensive agricultural technology measures with soil improvement and fertilization as the center, the goal of mu per ton of grain can be achieved stably in sapropenetate black soil. According to the author, the soil fertility index of sanding area is: about 25cm depth of tillage layer, 1.2μg / cm ~ 3 tillage capacity, about 1.3g / cm ~ 3 soil layer volume density, about 55% total tillage porosity , The porosity of the core layer is not less than 50%, the organic matter content of the soil is about 2%, the total N content of the soil is more than 0.1%, and the alkaline solution is more than 100μg / g of soil. Available P> 15μg / g soil, available K> 150μg / g soil.