EXCHANGE FERTILIZER (PHOSPHATE ROCK PLUS AMMONIUM-ZEOLITE) EFFECTS ON SORGHUM SUDANGRASS

被引：54

作者：

BARBARICK, KA ^{[1
]}

LAI, TM ^{[1
]}

EBERL, DD ^{[1
]}

机构：

[1] US GEOL SURVEY,DIV WATER RESOURCES,DENVER,CO 80225

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1990年 / 54卷 / 03期

关键词：

D O I：

10.2136/sssaj1990.03615995005400030050x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

The effectiveness of one NH4-exchanged zeolite (clinoptilolite) in increasing phosphate-rock solubility in Red Feather loamy sand, a Lithic Cryoboralf and Weld loam, an Aridic Paleustoll, was evaluated by measuring increases in dry matter, nutrient content, and nutrient uptake by Sorghum bicolor and S. sudanense. The exchanger fertilizer system increased P availability in the Weld soil by producing lower soil pH (nitrification of NH4 released by the zeolite) than the 0:1 zeolite/phosphate-rock ratio control and by adsorption of Ca in the zeolite. The Red Feather soil, deficient in K, did not provide definite yield responses because the zeolite sequestered K, thereby reducing plant K concentrations and uptake even though the zeolite increased total P uptake. -from Authors

引用

页码：911 / 916

页数：6

共 18 条

[1] PHOSPHATE ROCK DISSOLUTION IN SOIL - INDICATIONS FROM PLANT-GROWTH STUDIES [J].