摘要
为探究土地整治项目对土壤理化特性的改良效果,本文以宝鸡市千阳县张家塬镇柳家塬村土地整治项目为例,对工程实施后耕作层土壤(0~30 cm)土壤结构和理化特性进行了分析,并估算了新增耕地粮食产能。结果表明,土壤耕作层0~30 cm范围内土壤pH值较工程实施前降低了1.33%,土壤电导率降低了4.63%。0~30 cm土层深度范围内黏粒含量较整治前提高了14.46%,砂粒含量较整治前降低了13.71%。工程实施后,全氮、有效磷、速效钾以及有机质含量分别提高了37.61%、54.79%、3.15%和19.23%,通过工程实施增加了粮食产能39.89 t,有利于保障我国粮食安全。
In order to explore the improvement effect of the land remediation project on the physical and chemical characteristics of the soil,this paper took the land remediation project of Liujiayuan Village,Zhangjiayuan Town,Qianyang County,Baoji City as an example,the soil structure and physical and chemical characteristics of the tillage layer soil(0-30 cm)after the implementation of the project has been analyzed,and the new grain productivity of cultivated land has been estimated.The results showed that the soil pH value in 0-30 cm of the soil tillage layer was 1.33%lower than that before the project implementation,and the soil electrical conductivity was reduced by 4.63%.In the depth range of 0-30 cm soil layer,the clay content increased by 14.46%compared with that before remediation,and the sand content decreased by 13.71%compared with before remediation.After the implementation of the project,the total nitrogen content,available phosphorus,available potassium and organic matter content were increased by 37.61%,54.79%,3.15%and 19.23%,respectively.Through the implementation of the project,39.89 t of grain productivity was increased,which was conducive to ensuring food security in China.
作者
吉亚飞
JI Yafei(Shaanxi Provincial Land Engineering Construction Group Co.Ltd.,Xi′an Shaanxi 710075)
出处
《现代农业科技》
2020年第21期200-202,共3页
Modern Agricultural Science and Technology
关键词
土地整治
理化性质
粮食产能
旱地
渭北台塬区
land remediation
physical and chemical characteristic
grain productivity
dry land
Weibei tableland area
