摘要
针对渭北旱原“旱”、“薄”关键性的产量限制因素，采用再裂区设计，于１９８７～１９８８（干旱年型）和１９８８～１９８９（丰水年型）两个不同降水年度研究了旱地冬小麦耕作、施肥、覆盖因素的增产效应。干旱年型施肥增产显著。耕作、覆盖、覆盖×耕作、覆盖×施肥、覆盖×耕作×施肥互作增产极显著；丰水年型耕作因素间增产显著，施肥及施肥与耕作互作增产极显著。
Based on the two key
constraints of drought and less-fertilization re- stricting winter wheat yields,the resplit plot
design was adopted in two different rainfallyears,e. in 1987～1988(the year of drought
type)and in 1988～1989(the year of waterharves)to study wheat yield increase effect in rainfed
land by tillage ,fertilization andmulching. The results showed that the effect of fertilization was
significant and that oftillage,mulching and mulching× tillage,mulching ×fertilization,mulching
×fertiliza-tion ×tillage were very significant in the year of drought,but the effect oftillage
factorwas significant,and that of fertilization,and fertilization× tillagewas extremely signifi-cant
in the year of water harvest.
出处
《干旱地区农业研究》
CSCD
北大核心
1994年第3期28-35,共8页
Agricultural Research in the Arid Areas
基金
国家"七五"科技攻关75-04-03专题
关键词
冬小麦
耕作
施肥
覆盖
winter wheat
tillage
fertilization
mulching
