渭北旱原冬小麦全程微型聚水两元覆盖高产栽培增产机理研究

Study on yield-increasing mechanism of cultivation of micro water harvesting and double way mulching for the whole period of winter wheat growth and summer fallow in the arid area of Weibei

旱地冬小麦全程微型聚水两元覆盖栽培技术 ,是夏闲期采用“微型聚水两元覆盖技术”,种麦时仍保持微型聚水两元覆盖形式不变 ,沟下、垄上均种小麦的一种新的旱地小麦栽培技术 ,它集地膜覆盖和残茬覆盖之所长 ,能将冬小麦整个生产年度的降水最大限度地蓄积并保存于土壤之中 ,从而使小麦生长健壮、分蘖增多 ,根系发达 ,成穗数增加 ,穗粒数增多 ,千粒重提高 ,具有显著的增产、增收效果。是渭北旱原进行旱地冬小麦高产或超高产栽培的一条有效途径。

The cultivation of micro water harvesting and double way mulching for the whole period of winter wheat growth and summer fallow in dryland is a new yield increasing technique that adopts both plastic film and wheat stubble mulching to harvest rainwater in summer fallow period and keeps it unchanged after wheat is sowed in both ridges and furrows. It combines the advantages of plastic mulching and wheat stubble mulching by most efficiently harvesting the rainwater and store it in the soil. In addition, it can raise the soil temperature and create better conditions of water and heat for the wheat, enhancing the development of root system and the increase of tillering nodes, ears and the weight of per thousand grains, thus having a remarkable effect on increasing the yield and output value.