冀东地区越冬菠菜氮磷钾的吸收特性  

ABSORPTION CHARACTERISTICS OF NITROGEN PHOSPHORUS AND POTASSIUM OF OVERWINTERING SPINACH IN EASTERN HEBEI PROVINCE

作　　者：张淑侠[1] 吴旭银[2] 吴贺平[3] 常连生[1] 刘淑军 

机构地区：[1]河北科技师范学院分析测试中心,河北昌黎066600 [2]河北科技师范学院农学系,河北昌黎066600 [3]河北科技师范学院外语系,河北昌黎066600 [4]河北省昌黎县农业局,河北昌黎066600

出　　处：《河北职业技术师范学院学报》2003年第3期1-5,共5页Journal of Hebei Vocation-Technical Teachers College

摘　　要：采用田间试验与室内化验相结合的方法,对冀东地区越冬菠菜(唐山大叶)氮磷钾吸收特性进行了研究。结果表明:越冬菠菜新鲜茎叶产量在92544kg/hm2水平下,平均每生产1000kg新鲜茎叶,植株需吸收N3.073kg,P2O51.152kg,K2O3.772kg,比例为1.00∶0.38∶1.23。3月2日～4月10日是植株吸收N,P2O5的主要时期,分别占各自总吸收量的70.14%,66.12%;3月12日～4月10日是植株吸收K2O的主要时期,占总吸收量的64.67%。收获时,植株吸收的N,P2O5,K2O主要贮存在绿叶及花茎中。Applying field experiment and indoor analysis, the absorption characteristics of N, P and K of overwintering spinach (Tangshan Daye) in eastern Hebei province were studied in this paper. The results showed that, under the situation of 92 544 kg/hm^2 of the yield of fresh stems and leaves of the overwintering spinach, to produce every 1 000 kg fresh stems and leaves, 3.073 kg N, 1.152 kg P_2O_5 and 3.772 kg K_2O should be assimilated by the plants. The proportion was 1.00∶0.38∶1.23. N and P_2O_5 were mainly assimilated in the period from March 2^(nd) to April 10^(th), which were 70.14% and 66.12% of the total value of assimilation; K_2O was mainly absorbed from March 12^(th) to April 10^(th), which was 64.67% of the total value of assimilation. At harvest time, N, P_2O_5 and K_2O that were assimilated by the plans were mainly stored in green leaves and stems.

关 键 词：冀东地区 越冬 菠菜 氮 磷 钾 吸收 植株 绿叶 花茎 营养元素 

分 类 号：S636.101[农业科学—蔬菜学]