耐低钾小麦品种筛选及其吸钾特性的研究  

SCREENING OF WHEAT VARIETIES WITH LOW POTASSIUM ENDURANCE AND STUDY ON THEIR POTASSIUM UPTAKE CHARACTERISTICS

作　　者：吕世华[1] 邱古彬 张福锁[3] 

机构地区：[1]四川省农业科学院土壤肥料研究所,成都610066 [2]四川省乐山市农牧科学研究所,四川峨眉614216 [3]中国农业大学植物营养系,北京100081

出　　处：《植物营养与肥料学报》1996年第4期337-342,共6页Journal of Plant Nutrition and Fertilizers

基　　金：国家自然科学基金;四川省应用基础专项基金

摘　　要：1993～1995年在缺钾土壤上进行田间微区和小区试验,筛选耐低钾小麦品种并研究其吸钾特性。试验结果表明,在缺钾土壤上不同小麦品种的产量存在显著差异。以耐低钾力和品种适应性及分级指标进行评定,在微区试验的45份供试小麦品种中耐低钾能力强(1级)的占4.4％,耐性很差(7～9级)的占37.8％,其余介于二者之间(3～5级)的占与57.8％。川麦23和89—8耐性强的特点在小区试验中得到进一步验证。它们在缺钾条件下比敏感品种能够吸收较多的钾素,且有较多钾在成熟期转移到子粒中,因而在不施钾肥的条件下可获较高产量。Field experiments were conducted to screen wheat varieties with low potassium (K) endurance from 1993 to 1995. The characteristics of K uptake among these varieties was also studied. The results showed that the yields of defferent wheat varieties were significantly different in K deficient soil. According to low K endurance, variety adaptability and the tractional method made by Liu Hengguan, 45 wheat varieties were identified by field experiment. Among 45 varieties tested, 4. 4% belonged to that of high endurance of low K (1 grade) and 37.8% to that of low endurance (7~9 grades) and the others (57. 8%) were between the former two types (3-5 grades). Further, the endurance of Chuanmai-23 and 89-8 were proved in plot experiment. The two varieties are able to absorb more K from soil and transfer more to grain in their maturity than sensitive ones. Therefore, Chuanmai-23 and 89-8 could yield well respectively under K stress.

关 键 词：小麦 品种 缺钾 钾吸收 耐性 

分 类 号：S512.102[农业科学—作物学]