HUMIC SUBSTANCES IN STRAW COMPOST WITH ROCK PHOSPHATE

被引：19

作者：

SINGH, CP ^{[1
]}

AMBERGER, A ^{[1
]}

机构：

[1] TECH UNIV MUNICH,INST PLANT NUTR,W-8050 FREISING,GERMANY

来源：

BIOLOGICAL WASTES | 1990年 / 31卷 / 03期

关键词：

D O I：

10.1016/0269-7483(90)90156-M

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The production of humic substances and their retention capacities for phosphorus and calcium released during composting of wheat straw with two types of low-grade rock phosphate were examined. Relative quantities of humic acids increased with increase of composting time, while fulvic acids production decreased after 30 days of composting. The addition of both Mussoorie and Hyperphos retarded humic acids production and enhanced fulvic acids production. Molasses incorporation had no effect on humic acids but increased fulvic acids production. The production of humic acids and their retention capacity for P and Ca were greater in the presence of Mussoorie phosphate than in the presence of Hyperphos, but fulvic acids formation was higher with Hyperphos. About 80-85% P and 90-95% Ca retained by the total humic substances were found in the fulvic acids fraction. © 1990.

引用

页码：165 / 174

页数：10

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