Title: Effects of Sowing Date and Density on Grain Yield and Yield Component Traits of Broomcorn Millet Zhangxuan 1
Abstract: In order to clarify suitable cultivation measures for broomcorn millet Zhangxuan 1 spreading in large scale,a field experiment using split-plot design with three sowing dates and four planting densities were conducted to study the effects of sowing date and planting density on its grain yield and yield component traits.The results showed that the whole growth period of Zhangxuan 1 had been prolonged with the delaying of sowing date.In addition the plant height,main spike length and stem length showed the tread of first rising and then decreasing.However main stem internode number,main stem leaf number and stem diameter decreased gradually.With the increasing of density,its plant height,stem length become longer,but its main spike length and stem diameter dropped gradually.The different sowing date and density significantly affected grain yield and its components,and the effects of sowing date was greater than that of plant density.There are differences significantly under the same sowing date with the increasing of density or under the same density with different sowing date.The suitable planting density was 60×104 seedlings/hm2 in the first sowing date,90×104 seedlings/hm2 in the second and third sowing date separately.The effects of sowing date and density was greater on ears and grains per ear than on 1000-grain weight.Overall,the suitable sowing date of Zhangxuan 1 in the Northwestern of Hebei area was in about June 15 with the best planting density of 90×104 seedings/ha.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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