【摘要】 用相同灌溉频率、不同灌溉上限研究土壤含水量对芥蓝生长及农艺性状的影响。结果表明:增加土壤水分显著提早芥蓝生育期,水分亏缺使生长受到抑制,同时引起不同器官的生长速度及其性状差异;土壤水分亏缺显著影响芥蓝的叶长、叶宽、叶面积,以第8叶位左右叶片影响较大;根和茎的性状总体上随着土壤水分的增加而逐步增加,基茎长与土壤含水量之间呈极显著线性相关;生物产量、菜薹产量和薹叶比总体上随着土壤水分增加逐步提高,土壤水分较多使经济系数下降,菜薹产量、薹叶比和薹粗均有所下降。通过调节土壤水分能控制芥蓝生长和农艺性状,提高菜薹产量和品质。更多还原

【Abstract】 The influence of different soil moisture on the growth and agronomic traits of Chinese kale is studied by employing the same irrigation frequency while different amount treatments.The results show that increasing soil moisture greatly accelerates the commodity maturity of Chinese kale,but lack of water largely lags developmental period and induces discrepancy on the growth and developmental speed of each organ and relevant traits;the size and area of leaf are significantly affected by soil water shortage and around the 8th leaf is the most susceptible one;in general,the traits of root and stem of Chinese kale gradually increase with an increase of soil moisture,while a remarkable positive linear correlation is observed between base-stem length and soil moisture;the biomass,yield and stem-leaf ratio increase with an increase of soil moisture,but excessive water induces reduction of economic coefficient and yield,as well as stem-leaf ratio,stem thickness.Thus adjusting soil moisture can control the growth and agronomic traits of Chinese kale to improve yield and quality.更多还原