摘要
为筛选淮北地区的小麦适宜播期和种植密度,以该地区主栽优质高产半冬性小麦品种皖麦52为材料,设置6个播期S1（10月3日）、S2（10月10日）、S3（10月17日）、S4（10月24日）、S5（10月31日）、S6（11月7日）和4种密度D1（基本苗120＆#215;104株＆#183;hm-2）、D2（210＆#215;104株＆#183;hm-2）、D3（300＆#215;104株＆#183;hm-2）、D4（390＆#215;104株＆#183;hm-2）,分析了不同播期和密度组合下小麦群体质量、叶绿素荧光及产量的差异.结果表明,小麦群体干物质积累量在抽穗期以S2D4和S3D4最高,成熟期以S2D3和S3D3最高.灌浆中期叶面积指数随密度的增大呈逐渐增加的趋势,并以S2和S3两个播期较高.在同一密度下,不同生育期叶片叶绿素含量及灌浆期旗叶叶绿素荧光参数（F.、Fm、Fv/Fm、ETR和（O）PSII）皆以S2和S3较高,而在同一播期下则皆随密度的增大而下降.S2D2、S2D3、S3D2和S3D3组合的产量分别为7 790.5、8 122.4、7 826.4和8 261.1 kg＆#183;hm-2相互间差异不显著,且高于其他处理.综合来看,淮北小麦主产区皖麦52的适宜播期为10月10-17日,适宜密度为210万～300万株＆#183;hm-2.
In order to explore the suitable sowing date and density in main wheat production area of Huaibei, the effects of six sowing dates of Sl（October 3）, S2（October 10）, S3（October 17）, S4（Oc- tober 24）, S5（October 31）, S6（November 7） and four planting densities of D1 （120 × 104 plants ·hm-1）, D2（210X104 plants · hm-2）, D3（300× 104 plants· hm-2）, D4（390X 104 plants· hm-2） on physiological characteristics and yield of Wanmai 52 （semi-winter） was studied. The results indicated that the highest dry matter weight of wheat population was the combi heading stage, and of $2D3 and $3D3 at maturity. The leaf area index nation of $2D4 and $3D4 at of wheat at filling stage in creased with the increasing of planting density, and the highest values were observed at the sowing dates ofS2 and s3. Under the same planting density, the highest values of chlorophyll content at each growth stage and each chlorophyll fluorescence parameter （Fo, Fm, Fv/Fm, ETR and ΦbesH） at filling stage of wheat were all appeared at the sowing dates of $2 and $3, while they were all decreased with the increasing of planting density under the same sowing date. The highest yield of Wanmai 52 was observed in the combination of S2D2, S2D3,S3D2 and S3D3, and was 7 790.5, 8 122.4, 7 826.4 and 8 261.1 kg · hm-2 , respectively. This study suggested that the suitable sowing date of Wanmai52 in main wheat production area of Huaibei was October 10~October 17, and the suitable planting density was the basic seedling 210X 104 ~300 ;4 104 plants ~ hm-2, the recommended combinations of sowing date and density of the similar wheat varieties were S2D2, S2D3, S3D2 and S3D3.
出处
《麦类作物学报》
CAS
CSCD
北大核心
2014年第3期395-402,共8页
Journal of Triticeae Crops
基金
国家公益性行业(农业)科研专项(201303102)
国家科技支撑计划项目(2012BAD04B09
2011BAD16B06
2013BAD07B08)
关键词
冬小麦
播期
密度
干物质积累量
叶面积指数
叶绿素含量
叶绿素荧光
产量
Winter wheat
Sowing date
Planting density
Dry matter weight
Leaf area index
Chloro- phyll content
Chlorophyll fluorescence
Grain yield
