摘要
以胶东半岛的牟平农商里村试验田为研究区,结合当地气象资料对胶东半岛地区冬小麦最佳播期进行了研究。结果表明,小麦从播种至出苗需积温118.9℃,从出苗至越冬前每长1片叶需积温86.7℃;小麦在越冬期间仍在生长,一般生长1片叶上下,每长1片叶需积温43.4℃;从返青期的心叶算起到旗叶期主茎都是生长7片叶。为形成冬前6叶1心的壮苗标准且达到最高产量,需要在9月29日至10月5日间播种。小麦的穗数、每穗粒数、千粒重、产量与气候因素密切相关,在生长期间易受气象灾害的影响而导致产量降低。
Taking Nongshangli village, Muping district, Jiaodong peninsula as study area, the optimum sowing date of winter wheat in Shandong peninsulacombined was analyzed combining with the local meteorological data. The results showed that wheat needed the accumulated temperature of 118.9 ℃ from sowing to seeding emergence, and each leaf needed accumulated temperature of 86.7 ℃ from seeding emergence to the previous winter. During the overwintering period, wheat was still growing, generally grew about a piece of leaf, and each leaf growing needs accumulated temperature of 43.4 ℃. From the heart leaves at returning green stage to the main stem at flag leaf expanding stage, leaves grew for 7. In order to reach the standard of strong seedling in the stage of six leaves a heart before winter and the highest yield,the sowing date was necessary to arrange in the September 29 th to October 5th. The spike numbers, grains per ear,1 000-grain weight and yileld of wheat were close correlation with climatic factors. During the growth period, wheat was vulnerable to meteorological disaster, leading to the decrease of yield.
出处
《湖北农业科学》
2017年第1期56-63,共8页
Hubei Agricultural Sciences
基金
山东省气象局2014年科学技术研究项目(sdqx2014xm13)
关键词
气象因子
冬小麦
最佳播期
产量
影响
胶东半岛
meteorological factors
winter wheat
optimum sowing date
yield
effect
Shandong peninsula
