一九七七年度京郊小麦减产原因的分析和实现小麦高产稳产的几个问题

• 机 构: 北京市农科院科技二处,
• 出 处: 农业新技术
• 发表日期: 1977年07期
• 关键词: 成穗数 高产稳产 产量构成 冬小麦 减产原因 晚麦 因素分析 种麦 总茎数 延庆县

一今年,全市夏粮减产约4亿斤,除延庆县外,绝大多数县区减产1～3成不等。夏粮中主要是冬小麦大幅度减产。根据大面积调查,从各麦最后的产量构成三因素分析,减产的直接表现是:1.成穗数一般较常年减少8～10万左右,相当于减产30～33%;

This year, the city’s summer grain output reduced by about 400 million jin, except Yanqing County, the vast majority of counties cut 1 to 3 percent range. Summer wheat is mainly a substantial winter wheat production. According to the large-area survey, the final output from each wheat constitutes a three-factor analysis. The direct results of the reduction are as follows: 1. The number of spikes is generally reduced by about 80-100,000, which is equivalent to 30-33% reduction;