密肥条件对小麦中期群体质量的影响  

Effects of Density and Quantity of Nitrogen Fertilizer on Wheat Troop Quality in the Huaibei Area

作　　者：张婧霖 

机构地区：[1]阜阳市农科所,安徽阜阳236065

出　　处：《安徽农学通报》2007年第10期167-168,共2页Anhui Agricultural Science Bulletin

摘　　要：本试验设密度和施氮量两试验因素,考察其对小麦茎蘖动态影响。结果表明各生育时期群体茎蘖数与密度、施氮水平呈极显著正相关,随密度、施氮水平的提高而增加,群体茎蘖数在不同的密度、施氮水平间总体上呈极显著差异;拔节后随着生育进程的推进,无效分蘖的退化消亡,在群体自身的调节作用下,各处理间茎蘖数与成穗数在总体上差异变小。密度和施氮量对小麦群体茎蘖数和成穗数表现一定的互作效应。This experiment set density and nitrogen fertilizer level as two factors to study the dynamic effects on wheat stem shoots. The result shows that, in the reproductive period, groups stem shoots from an old stump is significantly correlated with density and the nitrogen fertilizer level, while the density and the nitrogen fertilizer level is raised, groups stem shoots from an old stump are enhanced, so it has a significant difference in different density, nitrogen levels. With the progress of reproductive process , degradation vanish of tiller and self- regulatory in the group , the differences between stem shoots from an old stump and the number of wheat ear become smaller in the overall. Density and nitrogen fertilizer play certain interaction effects on wheat groups tillers and wheat ears.

关 键 词：氮肥 密度 小麦 互作效应 茎蘖动态 成穗数 

分 类 号：S512.106[农业科学—作物学]