灌溉水中HCO_3^-对菜豆吸收利用土壤有效养分的影响  

EFFECT OF HCO_3^- IN IRRIGATION WATER ON THE ABSORPTION AND DISTRIBUTION OF SOIL AVAILABLE NUTRIENTS OF BEAN

作　　者：李春花[1] 褚天铎[1] 杨清[1] 刘新保[1] 

机构地区：[1]中国农业科学院土壤肥料研究所,北京100081

出　　处：《植物营养与肥料学报》1997年第4期329-333,共5页Journal of Plant Nutrition and Fertilizers

摘　　要：石灰性土壤条件下灌溉水中HCO3和不同HCO3水平对菜豆的生长及吸收利用土壤有效养分的影响进行了盆栽和水培试验。结果表明，在该土壤条件下以HCO3-含量较高的水进行灌溉明显降低菜豆对土壤养分的吸收利用能力，抑制养分向叶和果荚的分配;HCO3-含量越高，影响也就越明显。钙可在一定程度上减轻HCO3-前不利影响。Pot culture and water culture trails were used to study the effect of HCO3- in irrigation water arid different HCO3- level on the growth and ability of absorbing and using soil available nutrients of bean (phaseolus vulgaris L.). The irrigation water used in pot trails was the underground water in Beijing, in which the HCO3- level is account 8. 45mol/L. The results showed that under calcareous soil condltions, irrigating with underground water containing higher HCO3- level (8. 45mol/L) decreased the growth and total nutrient absorption, the percentage of different nutriens ranged from more than 50% to 30%, and inhabited the transportation of absorbed nutrient from stem to leaves and pods seriously: 0,5,10, 15 and 20mmol/L HCO3- level in nutrient solution of water culture were adjusted with 0. 01mol/L NaHCO3 and 5 and 10mmol/L Ca2+ level with 0.01 mol/L CaCl3, biological yield in water culture decreased with the increase. of HCO3- level, while Ca2+ colild alleviate the adverse effect of HCO3- to some extent.

关 键 词：菜豆生物量 灌溉水HCO3 养分吸收利用 

分 类 号：S643.101[农业科学—蔬菜学]