辽西半干旱区不同类型地膜降解特性及其对玉米产量的影响
冯晨,冯良山,刘琪,李昊儒,郑家明,杨宁,白伟,张哲,孙占祥

The Degradation Characteristics of Different Plastic Films and Their Effects on Maize Yield in Semi-Arid Area in Western Liaoning
FENG Chen,FENG LiangShan,LIU Qi,LI HaoRu,ZHENG JiaMing,YANG Ning,BAI Wei,ZHANG Zhe,SUN ZhanXiang
表1 供试土壤(0—20 cm)基本理化性质
Table 1 Basic physical and chemical properties of tested soil (0-20 cm)
有机质
Organic matter (g·kg-1)
pH


矿质氮Mineral nitrogen (mg·kg-1) 有效磷
Available phosphorus (mg·kg-1)
速效钾
Available potassium (mg·kg-1)
容重
Bulk density (g·cm-3)
全氮
Total nitrogen (g·kg-1)
全磷
Total phosphorus (g·kg-1)
全钾
Total potassium (g·kg-1)
阳离子交换量Cation exchange capacity
(cmol·kg-1)
14.8 6.03 111 21 75 1.35 0.98 0.33 20 21.51