LONG-TERM ROTATIONAL AND MANURIAL TRIAL IN UGANDA

被引：4

作者：

MCWALTER, AR ^{[1
]}

WIMBLE, RH ^{[1
]}

机构：

[1] SERERE RES STN, SOROTI, UGANDA

来源：

EXPERIMENTAL AGRICULTURE | 1976年 / 12卷 / 03期

关键词：

D O I：

10.1017/S0014479700100584

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Mean yields and average trends with time are given for cotton, finger millet and groundnuts grown in a rotational experiment during the period 1936-64. The experiment, which ran for 5 cycles, involved a 5 yr rotation with 3 different resting periods, 5 types of resting cover and farmyard manure at 3 levels. Yield trends differed from crop to crop, and a critical level of total soil N is suggested in partial explanation. Responses to farmyard manure in most crops increased over the years, with increasingly marked negative curvature in a pattern that showed most strongly in cotton crops immediately following the application of manure.

引用

页码：305 / 317

页数：13