POTASSIUM RELEASE BY SOME DELAWARE SOILS

被引：4

作者：

HSU, WW ^{[1
]}

LIEBHARDT, WC ^{[1
]}

COTNOIR, L ^{[1
]}

SPOLJARIC, N ^{[1
]}

机构：

[1] UNIV DELAWARE,DEPT PLANT SCI,NEWARK,DE 19711

来源：

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 1979年 / 10卷 / 07期

关键词：

exchangeable K; K uptake; nonexchangeable K;

D O I：

10.1080/00103627909366960

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The A and B horizons of 29 Delaware soils were extensively cropped to sudan grass (Sorghum vulgare Pers. Piper) and corn (Zea mays L. Pioneer Brand Hybrid No. 3958) to evaluate the K release characteristics of these soils. Various chemical analyses were made on these soils. The double acid North Carolina extractant (NCE) was good at predicting K uptake during the early stages of the experiment and was most sensitive with A horizon soils. However, this extractant was not suitable for predicting K uptake in the latter part of the experiment when nonexchangeable K was more important. Boiling 1N HNO3 was a good extractant in the latter part of the experiment when nonexchangeable K was being released and it also predicted K uptake. © 1979, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：1037 / 1056

页数：20

共 13 条

[1]

CONYERS ES, 1969, P SOIL SCI SOC AM, V33, P226

[2]

Jackson M.L., 1958, SOIL CHEM ANAL

[3] POTASSIUM IN AN ARID LOESSIAL SOIL - CHARACTERIZATION BY EQUILIBRIUM RELEASE-ABSORPTION TO STRONG SALT-SOLUTIONS [J].