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当前位置: 首页 > 文章 > 渭北高原黑垆土土壤养分变异及其与小麦产量的关系研究 现代农业科技 2019 (7) 3-7
Position: Home > Articles > Variations of Soil Nutrients and Its Relationship with Wheat Yield in Dark Loessial Soil on Weibei Plateau Modern Agricultural Science and Technology 2019 (7) 3-7

渭北高原黑垆土土壤养分变异及其与小麦产量的关系研究

作  者：
杜昊辉;王旭东
单  位：
西北农林科技大学资源环境学院;农业部西北植物营养与农业环境重点实验室
关键词：
土壤养分;小麦产量;逐步回归分析;渭北高原;黑垆土
摘  要：
2018年在调查渭北高原黑垆土土壤性状(养分和团聚体)和小麦产量的基础上,选取了高、中、低产量的18个田块为研究对象,分层采集0～50 cm土壤样品,研究了土壤全量和速效氮磷钾养分、有机质、>0.25 mm水稳性团聚体的变异规律及其与小麦产量之间的关系。结果表明,不同田块间土壤有机质、碱解氮、有效磷的变异较大,在0～50 cm各土层均达到中等变异;高产田块0～20 cm土层有机质、碱解氮、有效磷含量分别较低产田块高出36.76%、47.46%、121.55%。相关分析显示,小麦产量与土壤各层性状间的相关系数均达显著或极显著水平(除35～50 cm土层有效磷外);进一步逐步回归分析表明,渭北旱塬小麦产量不仅仅取决于土壤有机质和磷钾养分,土壤结构性状(>0.25 mm水稳性团聚体)也是关键因素。
译  名：
Variations of Soil Nutrients and Its Relationship with Wheat Yield in Dark Loessial Soil on Weibei Plateau
作  者：
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：
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：
soil nutrient;;wheat yield;;stepwise regression analysis;;Weibei Plateau;;dark loessial soil
摘  要：
Based on the investigations of soil properties(soil nutrients and water-stable aggregates)and wheat yield of dark loessial soil on Weibei Plateau in 2018,soil samples from 0-50 cm depth were collected in 18 fields with high,medium and low yields. The variability of soil total and available nutrients(N,P and K),soil organic matter and water-stable aggregates and their correlations with wheat yield were analyzed. The results showed that soil organic matter,alkali nitrogen and available phosphorus in different fields had great variability,and moderate variation occurred in 0-50 cm each soil layer. The organic matter,alkali nitrogen and available phosphorus content of high-yield fields were 36.76%,47.46% and 121.55%higher than those of the low-yield field in the 0-20 cm layer,respectively. Correlation analysis showed that the relationship between wheat yield and soil traits reached significant or extremely significant level(except for available phosphorus in 35-50 cm soil layer).Stepwise regression analysis equations showed that wheat yield depends on not only soil organic matter,phosphorus and potassium nutrients,the soil structure >0.25 mm water-stable aggregates)is also a key factor.

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