Preliminary study on result of spring sowing in winter wheat or spring wheat in YuXi Area

Bazsed on wheat plant alteration, we observed and analysised winter wheat planted in spring and spring wheat introduced in Yuxi area. The results indicated that:Yumai18 had lower yield that planted before middle February or those sprouts had just come up in the first ten days of March. spring wheat yield were higher than winter wheat, sowing at the same time, but we should choice the wheat varieties, are matured early, grain-filling quickly and resistanted to high temperature in laster period, ang paid attention to sowing in time and increasing grain weight per spike.