DICYANDIAMIDE INFLUENCE ON UPTAKE OF PREPLANT-APPLIED FERTILIZER NITROGEN BY RICE

被引：26

作者：

WILSON, CE ^{[1
]}

NORMAN, RJ ^{[1
]}

WELLS, BR ^{[1
]}

机构：

[1] UNIV ARKANSAS, RICE RES & EXTENS CTR, STUTTGART, AR 72160 USA

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1990年 / 54卷 / 04期

关键词：

D O I：

10.2136/sssaj1990.03615995005400040040x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

A field study was conducted to determine the influence of dicyandiamide (DCD) on fertilizer N recovery from soil and rice (Oryza sativa L.) when 15N-labeled urea was applied preplant (20 g N m-2). Microplots consisted of polyvinyl chloride pipes, 20.3 cm in diameter, driven into the soil. `Newbonnet' rice was seeded, thinned to five plants per microplot, and flooded when the plants were at the four- to five-leaf stage of development. Soil and plant samples were analyzed for N every 7 d for 49 following application (plant samples beginning at 35 d) and then every 14 d. Fertilizer N recovered in the total plant increased significantly from 35 to 42 d, after which no further changes occurred.

引用

页码：1157 / 1161

页数：5

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