构成小麦产量的三要素是亩穗数、穗粒数和千粒重。据各地资料和我社农科站1975年以来的试验,在低中产条件下,亩穗数和穗粒数是产量的决定因素,而这两个因素受外界条件的影响较大。本文就旱地小麦冬前生长及其与亩穗数、穗粒数的关系,作一粗浅的分析。一、冬前的生长量要适宜 3年的播期试验明显反映了亩穗数与亩入冬茎数、拔节茎数的关系(表1),随着 The three elements that make up wheat yield are the number of ears per ear, the number of grains per ear, and the weight of one thousand. According to the data from various places and the tests conducted by our social science station since 1975, under the conditions of low and medium production, the number of ears per ear and the number of grains per ear are the determinants of output, and these two factors are greatly affected by the external conditions. In this paper, the winter wheat before dry growth and its relationship with the number of ears per panicle, grain number for a superficial analysis. First, the growth of winter before the appropriate amount of 3-year sowing date test significantly reflects the number of acres per mu and the number of stems into the winter, the number of stems and stems tie (Table 1), with the