EFFECT OF LOW-TEMPERATURE OF IRRIGATION WATER ON RICE GROWTH AND NUTRIENT-UPTAKE

被引:22
作者
ZIA, MS
SALIM, M
ASLAM, M
GILL, MA
RAHMATULLAH
机构
[1] Land Resources Research Institute, National Agricultural Research Centre, Islamabad
来源
JOURNAL OF AGRONOMY AND CROP SCIENCE-ZEITSCHRIFT FUR ACKER UND PFLANZENBAU | 1994年 / 173卷 / 01期
关键词
COLD WATER IRRIGATION; NITROGEN; PHOSPHORUS; POTASH AND ZINC UPTAKE AND NUTRIENT INTERACTION; ORYZA-SATIVA L; GROWTH;
D O I
10.1111/j.1439-037X.1994.tb00570.x
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The study was designed to investigate the effect of cold irrigation water on rice growth and on uptake of N, P, K and Zn applied ca. 50, 20, 35 and 5 mg kg-1 soil, respectively. Cold temperature of irrigation water reduced rice shoot and root dry weight and plant height, significantly compared to hot temperature treatment. Under low temperature stress N was a major rice growth determinant. Increased shoot concentrations of both P and Zn allevated the low temperature stress. The uptake of N, P, K and Zn reduced significantly at low temperature (16.5-20-degrees-C soil and 20-24-degrees-C flood water) compared to high temperature (24.5-27-degrees-C soil and 26.5-29.0-degrees-C), with the strongest effect being noticed for N, followed by P, K and Zn. Application of N, P, K and Zn increased their uptake in rice shoots. Nitrogen and K had synergistic effect on their uptake. Responses to N and K application and their uptake behavior were well marked at higher than at low temperature whereas reverse was true for P and Zn.
引用
收藏
页码:22 / 31
页数:10
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