谷子新品种保213与济谷14产量性状与抗胁迫能力比较研究

以具有不同株型的优质高产谷子品种保213和济谷14为材料,安排了4个留苗密度(52.5、60、67.5和75株/m2)、5个施氮水平(0、4.5 g、9 g、13.5 g和18 g/m2)的裂裂区试验,系统比较了不同处理对产量相关性状影响,结果表明:不同处理保213的产量显著优于济谷14。在试验范围内,不同氮肥处理对2品种的影响不显著,施氮量在9～13.5 g/m2可以满足高产需求;而不同密度对2品种有显著的影响,济谷14的适宜密度在60～67.5株/m2,而保213在52.5～60株/m2下产量较高。2品种单株成穗率均随密度的升高而降低;增加施肥量提高了济谷14的成穗率,但保213反而降低。2品种产量随收获穗数增加而提高,但济谷14的增产幅度大于保213。与松散型济谷14相比,紧凑型品种保213具有较强的抗倒伏性能,更适合于在高肥、高密下获得高产。

Comparative Studies on Yield Characters and Stress Resistant Ability of a New Millet Varieties 'Bao213' and 'Jigu14'

A split-split plot design was set with 4 densities(52.5,60,67.5 and 75 plants/m2) and 5 N rate levels(0,4.5,9,13.5 and 18 g/m2),using millet varieties of Jigu14 and Bao213 as materials.The effects of different treatments on yield and its relative characters of the 2 varieties were compared.The result showed that the yield of Bao213 was better than that of Jigu14 in each treatment.There was no significant difference exist among different N rate levels on the 2 varieties within the experiment extent,and 9~13.5g/m2 N rate could reach the need for high yield.There was significant difference exist among different densities on the 2 varieties,and high yield could reach at the density of 60~67.5 plants/m2 for Jigu14,while for Bao213,it was around 52.5~60 plants/m2.The spike forming rate of both varieties increased with the density;it also increased with the N rate for Jigu14,but it decreased for Bao213.The yield increased with the harvest spikes,but the range of increase for Jugu14 was higher than that of Bao213.Compared with loose type Jigu14,tight type Bao213 possessed better lodging-resistance ability,and more suits for high density and high N rate level to reach high yield.