不同年份对小麦穗数穗粒数的影响及其对策  

Effect of Differeni Year on Grain Number and Spike of Wheat

作　　者：王勇[1] 孙本普[1] 孙雪梅 王继诰[1] 张金邦[1] 刘锋 

机构地区：[1]滨州职业学院,山东滨州256615 [2]滨州市园林处 [3]滨州市气象局

出　　处：《莱阳农学院学报》2005年第1期30-33,37,共5页Journal of Laiyang Agricultural College

摘　　要：通过多年的小区高产栽培试验和高产攻关,对小麦的穗数、穗粒数进行了研究。结果表明,在相似栽培条件下,有的年份间穗数相差较多,有的年份间穗粒数相差较多。年后幼苗阶段积温,是决定穗数多少的主要因子;小麦返青后5d平均滑动气温首次≥4℃至拔节前的天数,是决定穗粒数多少的主要因素。但只要采取相应的技术措施,不论什么年份,均可获得足够的穗数和较多穗粒数。Through years of survey and investigation of plot test and high-yielding cultivation, the grain number and spike of wheat were studied. The result showed that,with the similar cultivation condition,the grain number or the spike number can be different in different year. And the total temperature of seedling stage after year is the main dement to effect the spike number,the day from the temperature being deyond 4℃(last 5 days)to the jointing stage ofter the wheat turning green is the main dement to effect the grain number. It's possible to get the wanted spike and grain number with the right cultivation.

关 键 词：小麦 穗数 穗粒数 年份 产量 

分 类 号：S512.1[农业科学—作物学]