摘要
冬小麦全生育期覆膜是近年发展起来的一种新的栽培技术。该技术采用冬小麦穴播方式,自播种至收割的整个生育期内,地膜始终覆盖在地面。根据1997 年10 月至1998 年6 月在东光县龙王李乡进行的灌溉试验,初步确定了冬小麦全生育期覆膜灌溉的适宜灌溉制度,在偏湿润年为:灌3 次水( 包括播前水) ;播前水定额根据土壤墒情确定,一般为450 ~900 m 3 /h m 2 ;起身~拔节期的灌水定额为600 m 3/h m 2 ;抽穗~灌浆期的灌水定额为450 m 3 /hm 2 ;总灌溉定额为1500 ~1950 m 3 /h m 2 ;试验结果表明,与不覆膜的相比,全生育期覆膜冬小麦,节水412 % ,产量提高228 % 。
Wheat with bunch plating covered over with plastic film in whole growing period is a new developed cultivation technique in recent years. A suitable gained in a preliminar experiment in Shougang County from octuber 1997 to June 1998, result shows that can save water about 41.2 percent and increase product about 22.8 percent compared with normal cultivation.
出处
《节水灌溉》
北大核心
1999年第4期4-6,共3页
Water Saving Irrigation
关键词
冬小麦
全生育期覆膜
灌溉制度
wheat\ covered over with plastic film\ irrigation regime