根报道:构成小麦产量的穗数、穗粒数、千粒重就一个品种来说其有效穗数、穗粒重度幅较大、千粒重则比较稳定。所以,人们常重视促成有效穗、穗粒数的增加夺取高产,往往忽略千粒重变化对产量的影响。近几年来通过对小麦良种“贵农一号的高产栽培试验,初步认为有效穗数变化随栽培方法的不同差异较大,其穗粒数较为稳定。千粒重在同一年内,在不同密度、播量、追肥水平等各种栽培条件下,均无显著差 According to the report, the number of spikes, the number of grains per spike and the number of 1000-grain weight of wheat, the number of effective spikes per panicle, the degree of spikes per hectare and the weight of 1000-grain are more stable. Therefore, people often attach importance to the promotion of effective panicles, spikelets increase the number of high-yield, often ignore the effects of 1000-grain weight on the yield. In recent years through the high-yielding cultivation experiment of “Guinong-1”, it is preliminarily believed that the variation of effective panicle number is quite different with different cultivation methods, and the grain number per spike is more stable. In the same year, , Top-dressing level and other cultivation conditions, no significant difference