施肥与缩节胺配合对麦后直播夏棉光合特性及产量的影响  

Effects of different fertilizer application combined with different DPC quantities on photosynthesis property and yield of cotton directly seeded after wheat

作　　者：马宗斌[1] 李伶俐[1] 谢德意[2] 房卫平[2] 杨铁刚[2] 

机构地区：[1]河南农业大学农学院,郑州450002 [2]河南省农业科学院棉花油料作物研究所,郑州450002

出　　处：《中国生态农业学报》2006年第4期94-97,共4页Chinese Journal of Eco-Agriculture

基　　金：河南省重大科技攻关项目(0322010800)资助

摘　　要：研究了大田条件下3个N、P、K施肥水平配合2个缩节胺(DPC)用量对麦后直播夏棉光合特性及产量的影响。结果表明,尿素225kg/hm2、过磷酸钙450kg/hm2和氯化钾150kg/hm2配合喷施DPC90g/hm2,有利于提高夏棉叶片PSⅡ最大光能转换效率(Fv/Fm)、PSⅡ活性(Fv/Fo)、光合效率(Pn)和气孔导度(Gs),棉花群体光合速率(CAP)高,单株结铃多,优质铃增加,铃重大,比其他处理皮棉增产17.4%～33.9%。Effects of three levels of N, P, K fertilizer application combined with two DPC spraying quantity on photosynthesis property and yield of cotton directly seeded after wheat were studied under a field condition. The results show that applying urea（225kg/hm^2 ） ,superphosphate（450kg/hm^2 ）, potassium chloride（ 150kg/hm^2 ）and spraying DPC（90 g/hm^2 ） can improve the maximal PS Ⅱ light energy transformation efficiency （Fv/Fm）, PS Ⅱ activity（ Fv/Fo ）, photosynthesis rate （Pn） and stomatal conductance （Gs） of leaves of cotton, and increase the canopy photosynthesis rate （CAP）, bolls per plant, high-quality bolls and bolls weight of cotton. Compared with other treatments, lint yield is increased by 17.4 % -33.9%.

关 键 词：施肥 缩节胺 麦后直播夏 棉光合特性 产量 

分 类 号：S511[农业科学—作物学]