不同施肥措施对冀西北坝上萝卜生长发育的影响  

Effect of different fertilization on growth characteristics of radish in the northwest area of Hebei province

作　　者：张阔[1] 许靖[1] 陈随菊 王翠兰 孙志梅[1] 马文奇[1] 

机构地区：[1]河北农业大学资源与环境学院,河北保定071001 [2]河北省邢台县农业局,河北邢台054000 [3]河北省唐山市滦县农牧局,河北滦县063700

出　　处：《河北农业大学学报》2011年第2期22-26,共5页Journal of Hebei Agricultural University

基　　金：农业部公益性行业科研专项(200803030);河北省自然科学基金(D200800034)项目资助

摘　　要：在冀西北冷凉气候条件下,采用田间小区试验方法,研究了不同施肥措施对当地主栽萝卜品种生长发育的影响。结果表明：氮磷钾（NPK）配施的萝卜生物量最大。缺少氮、磷或钾任一元素或萝卜生育前期钾素供应不足,均会影响肉质根膨大期以后叶片的生长,甚至导致早衰;同时降低萝卜产量,减产幅度达18.74%-70.38%。萝卜叶片的干物质累积量在肉质根膨大期达到峰值,但鲜重和含水量的变化趋势却受养分供应状况的显著影响;肉质根的鲜干重、含水量以及根冠比均随生育进程而增加。在氮、磷、钾施用总量相同的情况下,钾肥一次性基施比分次追施效果明显。氮肥对叶片叶绿素含量影响显著,而磷钾肥对其影响不明显。A field experiment was conducted to investigate the effect of different fertilization on growth characteristics of radish under the cold weather condition in the northwest area of Hebei province.The results indicated that the highest yield was obtained by NPK treatment.When nitrogen,phosphorus or potassium was not supplied,or potassium was insufficiently applied during the former growth stage,the leaf growth of radish was significantly affected,and radish yield was reduced by 18.74%-70.38%.The peak of dry matter accumulation of leaf was observed in fleshy taproot development stage,while the variation trend of fresh weight and water content in leaf was obviously affected by nutrients supply.The fresh weight and dry weight of fleshy taproot were increased with radish growing.Compared with top dressing of potassium,applying potassium as basal fertilizer was beneficial to radish growth.Chlorophyll content of radish was significantly affected by nitrogen fertilizer,but not obviously affected by phosphorus and potassium fertilizers.

关 键 词：冀西北 萝卜 生长发育 氮磷钾养分 

分 类 号：S154.4[农业科学—土壤学] S147.5[农业科学—农业基础科学]