UREAFORM AS A SLOW RELEASE FERTILIZER - A REVIEW

被引：58

作者：

ALEXANDER, A ^{[1
]}

HELM, HU ^{[1
]}

机构：

[1] SCHERING AG,PFLANZENSCHUTZ DEUTSCHLAND,W-4000 DUSSELDORF 1,GERMANY

来源：

ZEITSCHRIFT FUR PFLANZENERNAHRUNG UND BODENKUNDE | 1990年 / 153卷 / 04期

关键词：

D O I：

10.1002/jpln.19901530410

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Ureaform (UF) is a condensation product between urea and formaldehyde consisting of short chains from methylene‐diurea to tetramethylenepentaurea. The rate of nitrogen release is mainly related to chain solubility. The mineralization of UF is governed by microbial activity. A wide spectrum of organisms is known to be involved. The degradation is mainly influenced by the biological fertility of the soil, temperature and to a limited degree by moisture, whereas pH and particle size have no pronounced effect. The importance of the activity index (A.I.) as a unit to evaluate the quality of an UF product and the versatility of the UF system in general are discussed. More recent trial results with UF products show the beneficial effects of the particular kind of slow release nitrogen fertilizer in meeting needs for improved fertility management and reduced pollution of drainage waters. Copyright © 1990 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：249 / 255

页数：7

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