日光温室不同温光环境下番茄对氮磷钾吸收规律的研究  

Study on tomato uptake of nitrogen, phosphorus and potassium as affected by temperature and light intensity in a solar greenhouse

作　　者：刘军[1] 高丽红[1] 黄延楠[1] 

机构地区：[1]中国农业大学农学与生物技术学院,北京100094

出　　处：《中国农业大学学报》2004年第2期27-30,共4页Journal of China Agricultural University

基　　金：北京市自然科学基金重点资助项目( 6 0 110 0 2 );国家高技术研究发展计划资助项目( 2 0 0 1AA2 4 70 11)

摘　　要：为探明环境对番茄养分吸收的影响 ,以中杂 9号番茄为试材 ,研究日光温室秋冬、冬春 2个栽培茬口不同温光环境下番茄对氮磷钾的吸收规律。结果表明 :温光环境对番茄吸收氮磷钾总量的变化产生影响。以果实膨大期为例 ,秋冬茬番茄对全N、P和K吸收的绝对量只相当于冬春茬的 85 4 1%、70 5 1%和 82 4 % ;但 2个茬口番茄全生育期对全N、P和K的吸收比例基本相同 ,为 1∶( 0 14～ 0 17)∶( 1 6 8～ 1 73) ,与温光环境无关。秋冬茬和冬春茬番茄对全N、P和K的吸收量均呈单峰曲线 ,果实膨大期达到最大值。果实膨大和采收初期是营养吸收最旺盛时期 ,吸收量均占到全生育期总量的 6 0 %以上 。The experiment was conducted in a solar greenhouse with a tomato variety, Zhongza No.9, to investigate effects of light and temperature on the uptake of nitrogen, phosphorus and potassium in winter spring and autumn winter crop. The results showed that uptake of total N, P and K in autumn winter period was about 85 4 % ,70 5 % and 82 4 % respectively compared to that in winter spring period. At the fruit formation stage, It was influenced by both light intensity and temperature, But the uptake ratio of total N, P and K is 1∶0 14～0 17∶1 68～1 73, varied only with growth stage. The content of uptake to total N, P and K was a single peak curve, the maximum appeared at the fruit formation stage. The percentage of each growth stage to total uptake varied, at fruit formation stage and early stage of picking, it was over 60 % both in winter spring and autumn winter crop. For tomato grown in solar greenhouse, both seasonal changes and plant developmental stage must be taken into account fully for fertilization.

关 键 词：日光温室 温光环境 番茄 氮素 磷素 钾素 吸收规律 合理施肥 

分 类 号：S641.2[农业科学—蔬菜学] S626.5[农业科学—园艺学]