水肥耦合对水稻生长性状及产量的影响  

Effect of Water and Fertilizer Coupling on Growth Characters and Yield of Rice

作　　者：翟晶[1] 曹凑贵[1] 潘圣刚[1] 汪金平[1] 蔡明历[1] 王若涵[1] 

机构地区：[1]华中农业大学作物栽培与生理生态研究中心,湖北武汉430070

出　　处：《安徽农业科学》2008年第29期12632-12635,12662,共5页Journal of Anhui Agricultural Sciences

基　　金：国家粮食丰产科技工程项目(2004BA520A02)

摘　　要：[目的]研究水肥耦合对水稻生长性状及产量的影响。[方法]在盆栽试验中,以杂交中稻两优培九为材料,设4种土壤水势(淹水、0、-30和-60 kPa)和5种氮肥水平(0、1.5、2、2.5和3.0 g/盆),研究水肥耦合对水稻生长性状及产量的影响。[结果]土壤水势与氮肥水平对水稻产量有显著的互作效应。不施氮时,各水分处理间水稻产量差异不显著,施氮量为1.5 g/盆时,0 kPa水势下水稻产量最高。其他氮肥水平下,水稻产量均随土壤水势的降低而降低;在相应土壤水势下增施氮肥可增加水稻的株高、叶面积、叶绿素含量和植株各部分干重,提高水稻根系活力,增加产量。但施氮量过多,则造成水分胁迫,不利于增产。[结论]水肥对水稻产量的影响表现为明显的协同效应。[ Objective ] The study aimed to research the effects of water and fertilizer coupling on growth characters and yield of rice. [ Method] In the pot test, with the hybrid mid-rice Liangyoupeijiu as material, 4 soil water potential （flooding, 0, -30 and 60 kPa） and 5 nitrogen levels （0, 1.5, 2, 2.5 and 3.0 g/pot） were set up to study the effects of water and fertilizer coupling on growth characters and yield of rice. [ Result] Soil water potential and nitrogen level had significant interaction effects on rice yield. The differences of rice yield in all water treatments were not significant under no nitrogen application. The rice yield was the highest under 0 kPa soil water potential when nitrogen was ap- plied by 1.5 g/pot. Under other nitrogen levels, the rice yield was decreased with the decline of soil water potential. Under the corresponding soil water potential, when nitrogen amount was increased, the plant height, leaf area, chlorophyll content and dry weight of each part of rice plant all could be increased and the root activity and yield of rice could also be raised. But too much nitrogen amount could cause water stress and go against the increase of rice yield. [ Conclusion] The influence of water and fertilizer on rice yield showed obvious synergistic effect.

关 键 词：水稻 水肥耦合 生长性状 产量 

分 类 号：S511[农业科学—作物学]