钾素对小麦生长发育及籽粒产量的影响  

Effect of Potasium Fertilizer on the Growth, Development and Yield in Wheat

作　　者：马淑琴[1] 李春霞[2] 李友军[2] 付国占[2] 秦拓 

机构地区：[1]河南省农科院科技开发处,郑州450002 [2]洛阳农业高等专科学校农学系,洛阳471003 [3]固始县城关中学

出　　处：《洛阳农业高等专科学校学报》1999年第2期8-10,共3页Journal of Luoyang Agricultural College

基　　金：河南省科委和洛阳市科委重点科技攻关项目

摘　　要：1993～1994年采取田间试验和池栽试验相结合的方法，对钾素的增产效应进行了研究。结果表明，高产条件下增施钾肥，能够增加植株基部一、二节间粗度、厚度．提高植株抗倒能力。能够提高叶面积系数，增加旗叶Chl含量．减少O2产生，降低MDA含量，延缓叶片衰老．促进干物质积累与运转．增粒增重，从而显著增加小麦产量。但施钾量超过150kg／hm2以后其效果有所下降。Effect of potasium fertilizer on the yield in wheat was studied with the method of field test and pot test from 1993 to 1994. The result showed that under the high yield conditions potasium fertilizer could increase the thickness of the first and second node, the ability of lodging-resistance, leaf area index, chlorophyll content of flag leaf, decrease the produce of O2 and MDA, retard the leaf growing old, inerease dry matter accumulation and transportation, thus increasc the yield. But the effcct begins to decrease when the number of potasium fertilizer application is over 150kg/hm2.

关 键 词：钾素 小麦 生长发育 产量 籽粒 

分 类 号：S512.106.2[农业科学—作物学] S158.3