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当前位置: 首页 > 文章 > 渭北高原典型黑垆土区土壤物理性状及其对小麦产量的影响 应用生态学报 2018 (6) 1911-1918
Position: Home > Articles > Soil physical properties and its effects on wheat yield in typical dark loessial soil on Weibei Plateau,China Chinese Journal of Applied Ecology 2018 (6) 1911-1918

渭北高原典型黑垆土区土壤物理性状及其对小麦产量的影响

作  者：
贺丽燕;杜昊辉;王旭东
关键词：
渭北高原;黑垆土;土壤物理性状;小麦产量;偏生产力
摘  要：
2015年在调查渭北高原黑垆土施肥量、产量和土壤性状(紧实度)的基础上,确定了61块冬小麦田为研究对象,分层采集0~50 cm土壤样品,研究了土壤紧实度、容重、水稳性团聚体的变异规律及其与小麦产量、化肥偏生产力的偏相关关系.结果表明:0~50 cm土层土壤紧实度和水稳性团聚体具有弱变异特征,变异系数分别为9.9%、4.9%;容重具有中等变异特征,变异系数为27.5%.小麦产量、化肥偏生产力与0~50 cm土壤紧实度均呈极显著负相关,其中与0~10、10~20和20~35 cm土层相关性状的关系更密切.小麦产量与土壤紧实度、容重、>0.25 mm水稳性团聚体含量、有机质的多元回归分析表明,产量最终取决于土壤紧实度和有机质两个关键因素.因此,提高土壤有机质含量,降低表层(0~20 cm)和犁底层(20~35cm)土壤紧实度是提高渭北高原黑垆土区小麦产量的关键.
译  名：
Soil physical properties and its effects on wheat yield in typical dark loessial soil on Weibei Plateau,China
作  者：
HE Li-yan;DU Hao-hui;WANG Xu-dong;College of Resources and Environment,Northwest A&F University;Key Laboratory of Plant Nutrition and Agri-environment in Northwest China,Ministry of Agriculture;
单  位：
HE Li-yan%DU Hao-hui%WANG Xu-dong%College of Resources and Environment,Northwest A&F University%Key Laboratory of Plant Nutrition and Agri-environment in Northwest China,Ministry of Agriculture
关键词：
Weibei Plateau;;dark loessial soil;;soil physical properties;;wheat yield;;partial factor productivity
摘  要：
Based on the investigations of fertilizer application rates,wheat yield and soil properties( soil compaction) of dark loessial soil on Weibei Plateau in 2015,soil samples from 0-50 cm depth were collected in 61 winter wheat fields. The variability of soil compaction,bulk density,water-stable aggregates and their partial correlations with wheat yield and partial factor productivity were analyzed. The results showed that soil compaction and water-stable aggregates in 0-50 cm depth had weak variability,with the variation coefficients of 9. 9% and 4. 9%,respectively. Soil bulk density had moderate variability,with the variation coefficient of 27. 5%. Wheat yield and fertilizer partial factor productivity were negatively correlated with soil compaction,which were more closely correlated in soil depths of 0-10 cm,10-20 cm and 20-35 cm. Results from multiple regression showed that wheat yield was determined by soil compaction and organic matter. The improvement of soil organic matter and reduction of soil compaction in top soil( 0-20 cm) and plough pan layer( 20-35 cm) would be the key strategies to enhance wheat yield in dark loessial soil on Weibei Plateau.

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