论文部分内容阅读
对1983～1988年贵阳地区54份小麦新品种(系)主要农艺性状的研究表明,该地区小麦产量与穗粒数、千粒重、穗粒重呈极显著正相关,相关系数分别为0.7840、0.7688、0.8685。超标品种(系)产量比对照增高35.58％,亩穗数与对照基本相同,株高比对照有所下降,穗粒数、千粒重、穗粒重比对照分别增加12.8％,9.2％,21.1％,因此在该地区提高小麦品种产量潜力,应稳定现有亩穗数,适当降低株高,着重提高对穗粒重的选择,即增加穗粒数从选育多花多实品种,增加千粒重以选育大穗大粒品种。同时进行千粒重与穗粒数的综合选择能提高单稳粒重,达到增产目的。
The main agronomic traits of 54 wheat cultivars (lines) in Guiyang from 1983 to 1988 showed that there was a significant positive correlation between wheat yield and grain yield per spike, grain weight per spike and grain weight per spike in 1983 ~ 1988 with the correlation coefficients of 0.7840 and 0.76688, respectively. 0.8685. The yield of super-standard varieties (lines) increased by 35.58% and the number of ears per acre was basically the same as that of the control. The plant height was lower than that of the control. The grains per spike, 1000-grain weight and spike weight increased by 12.8%, 9.2% and 21.1% Therefore, in this region to improve the yield potential of wheat varieties, should stabilize the existing number of ears per acre, reduce plant height, and focus on increasing the choice of grain weight per spike, increasing the number of grains per spike from growing more flower varieties and increasing 1000-grain weight Ears large ears large grain varieties. The combination of 1000-grain weight and grain number at the same time can increase the monosomic grain weight and achieve the purpose of increasing yield.