化学制剂及不同覆盖材料应用在夏棉上的节水增收效益

Water Saving and Yield Increase Benefits by Applying Chemical Agent and Various Covering Materials to Summer Cotton

在播期墒情不足的夏棉种植区 ,利用化学制剂进行棉种涂层有显著的催芽和促苗效果。采用不同材料对棉田进行覆盖 ,开花前～拔棵期 2个多月内可节水 2 9.8～ 5 3.4mm。其中适量 ( 4.5t/hm2 )的秸秆覆盖皮棉产量可达 1160 .2kg/hm2 ,水分生产效益超过不覆盖夏棉 30 %以上。

For the summer-cotton planting district of insufficient soil moisture in the date of seeding, applying chemical agent to coat cotton seeds has obvious effects of germ induction and seedling acceleration. Applying various materials to cover cotton-planting farmlands, the water saving in the period of more than two months, from before flowering to the date of pulling stem up, is 29.8-53.4 mm. Of these, applying adequate quantity (4.5 t/hm\+2) of straw to cover the cotton farmland, the ginned cotton yield can increase to 1 160.2 kg/hm\+2, and the water production effect can raise by more than 30% compared with the uncovered summer cotton.