播期播量对胶东小麦植株性状及产量的影响

为探讨冬小麦适宜播期播量,以烟农5158为材料,采用裂区试验设计进行了试验。结果表明:随播期推迟株高降低、主茎叶龄减少,随播量增加株高增加、主茎叶龄变化不大。不同的播期播量对冬小麦产量及产量性状的影响均达极显著水平。随播期(9月27日除外)推迟,产量、成穗数降低,穗粒数和千粒重提高;随播量的增加,产量、成穗数增加,穗粒数和千粒重降低。播期播量最佳组合为10月3日播种、180万株/hm²播量,产量达7746.0kg/hm²。成穗数是决定产量的关键因素。

Influences of Sowing Time and Density on Plant Characteristics and Yield of Wheat in Jiaodong Peninsula

In order to explore the suitable combination of sowing time and planting density,a split plot experiment was conducted with ""Yannong5185"" as experimental materials.The results showed that the plant height was decreased with the delay of sowing time,while increased with the increase of planting density.The number of main stem leaf age was not changing much with the increase of planting density,while decreased with the delay of sowing time.The effects on grain yield and yield traits of winter wheat were significantly different under different sowing time and planting density conditions.Expect the sowing time of September 27,the number of ears and grain yield were decreased with the delay of sowing time,while increased with the increase of planting density.The number of grains per ear and the1000-grain-weight were increased with the delay of sowing time,while decreased with the increase of planting density.The best sowing time was October3 and the best planting density was 180 ×104 seedlings per hectare.The yield reached to 7746.0kg/hm².The number of ears was the key factor to yield.