POTASSIUM NUTRITION OF RICE (ORYZA-SATIVA L) VARIETIES UNDER NACL SALINITY

被引：62

作者：

BOHRA, JS ^{[1
]}

DOERFFLING, K ^{[1
]}

机构：

[1] UNIV HAMBURG,INST GEN BOT,W-2000 HAMBURG 52,GERMANY

来源：

PLANT AND SOIL | 1993年 / 152卷 / 02期

关键词：

CATIONS; NACL SALINITY; NUTRIENT RATIOS; POTASSIUM NUTRITION; CHLOROPHYLL FLUORESCENCE; RICE; YIELD; YIELD ATTRIBUTES;

D O I：

10.1007/BF00029100

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A salt-tolerant (Pokkali) and a salt-sensitive (IR28) variety of rice (Oryza sativa L.) were grown in a phytotron to investigate the effect of K (0, 25, 50 and 75 mg K kg-1 soil) application on their salt tolerance. Potassium application significantly increased potential photosynthetic activity (Rfd value), percentage of filled spikelets, yield and K concentration in straw. At the same time, it also significantly reduced Na and Mg concentrations and consequently improved the K/Na, K/Mg and K/Ca ratios. IR28 responded better to K application than Pokkali. Split application of K failed to exert any beneficial effect over basal application.

引用

页码：299 / 303

页数：5

共 16 条

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