摘要
旱作土壤施用有机肥料能明显提高作物产量和水分利用率。在陇中半干旱地区,小麦的最佳有机肥施用量为3068kg/亩,施肥上限约为400Okg/亩,在此限以内,每亩每增施100kg普通有机肥料,小麦产量平均提高1.76kg。水分利用率与施肥量之间呈直线型正效应,每100kg普通有机肥能提高水分利用率0.0062kg/mm·亩。
Application of organic fertilizer to rainfed soil can obviously improvecrop
yields and water use efficiency. In the semiarid area of the middle part of Gansu,the optimal
application of organic fertilizers to wheat is 3068 kg/ mu with the upper limitof organic fertilizer
application of 4000 kg/ mu.Within this limit,the increasing applica-tion of common organic
fertilizers of every l00kg can increase 1.76 kg of wheat yields onthe average. Water use
efficiency with amount of fertilizer application appears to belinear effect.Every per l00 kg of
common organic fertilizer applied can raise water useefficiency of 0.0062 kg/mm per mu.
出处
《干旱地区农业研究》
CSCD
北大核心
1994年第2期12-16,共5页
Agricultural Research in the Arid Areas
关键词
有机肥
小麦
产量
水分利用率
organic fertilizer
wheat yield
water use efficiency