小麦产量是由每亩穗数、每穗粒数和粒重构成的。我县历年小麦产量的高低,大部分都是由每亩有效穗的多少所决定。各地高产栽培经验表明,由于水、肥、气、热条件,地貌、土壤条件,以及耕作制度、品种特性、播种期以及栽培管理水平的不同,其增加有效穗、夺取高产的途径亦不同。归纳起来,有以主茎成穗为主、主茎与分蘖成穗并重以及分蘖成穗为主三条途径。 一、以主茎成穗夺高产的途径 Wheat yield consists of spikelets per acre, grain number per spike and grain weight. The level of wheat production in the county over the calendar year, most of them are determined by the number of effective ears per acre. The high-yielding cultivation experience in various places shows that due to the differences in water, fertilizer, gas and heat conditions, topography, soil conditions, tillage system, variety characteristics, sowing date and cultivation management level, it increases the effective spike and has different ways of obtaining high yield. To sum up, there are three main ways that the main stem is spike, the main stem and tiller are spike, and the tiller is spike. First, the main stem into the ear to yield high-yield way