过去东北春麦区麦种繁殖一直沿用宽垅单条播种,即多采用60厘米的大垅(或45厘米垅距)单行稀植。用宽垅单条点播生产原种,固然单株营养面积较大,有利单株分蘗发育,能够适当提高繁殖倍数,但在稀条播的情况下,种子分布不匀,单株营养面积并不尽合理,有时分蘗不少,但成穗率往往不高,且分蘗穗发育较晚。在东北地区,春小麦成熟时,正值高温季节,经常由于高温逼熟,使分蘗穗发育不良,籽粒干秕,生活力弱,种子质量降低,直接影响翌年的幼苗生育,不利于全苗、壮苗,因而实际的种子繁殖倍数并不高。近几年,在良种繁殖的生产实践中,我们采用了带状稀植,代替了过去的宽垅条播,取得了较好的繁殖效果。带状稀播,即几个窄行和1个宽行相同种植, In the past, the wheat breeding in northeastern spring wheat area had been sown with single broadleaf sowing, that is, the single sowing of large sward (or 45 cm stern) of 60 cm was mostly used. With a wide range of single-on-demand production of raw species, of course, a larger nutrient area per plant, tillering of the development of a single plant, can properly raise the breeding fold, but in the case of thin sowing, uneven distribution of seeds, nutrient area per plant is not reasonable , Sometimes a lot of tillers, but the rate of success is often not high, and tiller spike development later. In the northeast region, when spring wheat matures, it is in high temperature season, which often causes tillering panicle dysplasia, dry kernel of grain, weak vitality and low seed quality, which directly affects seedling growth of next year, which is not good for whole seedling and strong Miao, so the actual multiplication of seed is not high. In recent years, in the production of breeding breeding practice, we used a strip of thin planting, instead of the past, broad-leaved sowing, and achieved good reproductive effects. Banded thin strip, that is, a few narrow lines and a wide line of the same planted,