水稻苗期根系营养吸收特性及其与植株生长关系的初步研究  

THE PRELIMINARY STUDY ON THE RELATIONSHIP BETWEEN THE CHARACTERISTICS OF NUTRITION UPTAKE OF RICE ROOTS AND THE PLANT GROWTH IN TILLERING STAGE

作　　者：李木英[1] 石庆华[1] 徐益群[1] 张佩莲[1] 谭雪明[1] 

机构地区：[1]江西农业大学农学院

出　　处：《江西农业大学学报》1995年第2期116-121,共6页Acta Agriculturae Universitatis Jiangxiensis

基　　金：江西省自然科学基金

摘　　要：选用杂交稻和常规稻品种共７个，研究了苗期根系营养吸收特性以及与植株生长的关系。结果表明：杂交稻组合和ＧＲ－１的根系营养吸收能力较常规稻强，植株的干物质积累明显优于其它供试品种，植株的干物质积累与根系营养吸收呈极显著相关，受三叶期营养吸收和干重的影响很大，根系单位于重营养吸收速率与相对生长率显著相关。The relationship between the nutrition uptake of rice roots and the plant growth was stud-ied with two hybrid combinations and five normal varieties.The results obtained were as fol-lows:The amount of nutrition uptake and the dry matter production of the two hybrid combina-tions and GR-1 were higher than those of the other varieties.There was a close correlation be-tween the dry matter and the nutrition uptake of the roots.The relative growth rate of theplant was also related with the nutrition uptake rate. The dry weight and the amount of nutri-tion uptake in the tillering stage was greatly affected by the dry weight and amount of nutritionuptake in the three-leaf stage.

关 键 词：水稻 根系 营养吸收特性 生长 

分 类 号：S511.101[农业科学—作物学]