SPATIAL VARIABILITY OF WHEAT YIELD AND SOIL PROPERTIES ON COMPLEX HILLS

被引：141

作者：

MILLER, MP ^{[1
]}

SINGER, MJ ^{[1
]}

NIELSEN, DR ^{[1
]}

机构：

[1] UNIV CALIF DAVIS,DEPT LAND AIR & WATER RESOURCES,DAVIS,CA 95616

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1988年 / 52卷 / 04期

关键词：

Agronomy - Carbon--Concentration - Materials--Physical Properties - Soils--Erosion - Statistical Methods;

D O I：

10.2136/sssaj1988.03615995005200040045x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Surface soil and wheat yield were sampled on a 400- by 250-m grid to determine the relationship between wheat yield and soil properties influenced by erosion. Five transects over complex slopes were made 50 m apart. Every 20 m, along each transect, depth to parent material, surface soil thickness, depth to carbonates, landscape position, and percent slope were recorded. In addition, soil samples were collected to determine particle size, percent organic C, water retention at 33 and 1500 kPa, and pH. One meter square plots of wheat were harvested at each of the 100 sites previously sampled. Subsoil samples were taken at select sites to determine organic C and particle size. Study results are discussed.

引用

页码：1133 / 1141

页数：9

共 37 条

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