WATER AND FERTILIZER INTERRELATIONS WITH IRRIGATED MAIZE

被引：13

作者：

FAPOHUNDA, HO

HOSSAIN, MM

机构：

[1] Department of Agricultural Engineering, Obafemi Awolowo University, Ile-Ife

来源：

AGRICULTURAL WATER MANAGEMENT | 1990年 / 18卷 / 01期

关键词：

D O I：

10.1016/0378-3774(90)90035-W

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

This study was designed to determine maize yield interactions with water (W) and fertilizer (F) using a line source sprinkler system. Generally, maize yields increased with increasing water and fertilizer applications. The maximum grain yield of 6.15 t/ha was produced with 523 mm of water and 300 kg/ha of NPK (15-15-15) fertilizer, while, the highest dry matter yield of 17.84 t/ha occurred with 495 mm of water and 300 kg/ha of NPK fertilizer. Maize yields were highly correlated with water and fertilizer with R2 = 0.95 for grain yield and R2 = 0.926 for dry matter yield. A highly significant W × F interaction (at 1% level) indicated high maize yields when fertilizer uptake is enhanced by high soil moisture level. Water productivity was increased by fertilizer application, but the relationship was not as definite with soil moisture. Production functions were generated to reliably predict maize yields. © 1990.

引用

页码：49 / 61

页数：13