鲁中地区播期播量对不同类型小麦品种生育及其产量构成因素的影响

Effects of Sowing Time and Planting Density on Growth, Development and Yield Components of Different Wheat Varieties in Central Shandong Province

以多穗型品种济麦22和大穗型品种泰农18为试材，研究其在鲁中地区的适宜播期和播量。结果表明：随播期推迟，产量和穗数先增后减，穗粒数逐步递减；随播量加大，穗数增加，穗粒数和千粒重降低；在2011-2012年度气候条件下，最适宜播期是10月7日，济麦22最适播量（基本苗）是180万株/hm2，泰农18是240万株/hm2。

Using multiple spike type wheat variety Jimai 22 and large spike type wheat variety Tainong 18 as materials,the suitable sowing time and planting density were studied in central Shandong Province.The results showed that with the delay of sowing time,the yield and spike number per hectare increased firstly and then reduced,while the kernels per spike decreased gradually.With the increase of planting density,the spike number per hectare increased,while the kernels per spike and thousand seed weight decreased.During 201 1 -2012,the optimum sowing time was October 7th,and the suitable planting density of Jimai 22 and Tai-nong 18 were 180 ＆#215;104 and 240x10^4 plants per hectare respectively.