| 作物生长中光照和氮肥施用量的相互关系研究 |
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| 引用本文： | 曾希柏,青长乐,谢德体,侯光炯. 作物生长中光照和氮肥施用量的相互关系研究[J]. 土壤学报, 2000, 37(3): 380-387 |
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| 作者姓名： | 曾希柏 青长乐 谢德体 侯光炯 |
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| 作者单位： | 1. 中国农业科学院农业自然资源和农业区划研究所山区研究室,北京,100081
2. 西南农业大学资源环境学院,重庆,400716 |
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| 摘 要： | 应用盆栽试验,在人工气候箱内进行的研究结果表明:光照强度(X1,mol/m2·s)和氮肥施用量(X2,g/pot)均对莴笋生长及生物量产生影响,且二者的变化与莴笋生物量的关系可表示为y＝-0.375+0.0230X1+9.421X2+0.0251X1X2-0.131×10-4X21-17.794X22形式; 不同光照强度下氮肥施用量与莴笋生物量的关系均可表示为y＝b0+b1X+b2X2形式;不同氮肥施用量下,光照强度与莴笋生物量的关系亦可用二次或三次多项式来表示.根据研究结果,还求得了氮肥施用量(X2)与光照强度(X1)的关系为:X2＝0.446-0.477×10-2X1+0.269×10-4X21-0.394×10-7X31.此外,本研究还探讨了光照强度、氮肥施用量与莴笋的氮素营养状况的关系.
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| 关 键 词： | 莴笋 氮肥 光照强度 生物量 作物 产量品质 |
| 收稿时间： | 1998-08-06 |
| 修稿时间： | 1999-05-31 |
INTERRELATIONSHIP OF LIGHT AND NITROGEN FERTILIZER APPLICATION IN CROP GROWTH |
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| Zeng Xi-bo,Qing Chang-le,Xie De-ti and Hou Guang-jiong. INTERRELATIONSHIP OF LIGHT AND NITROGEN FERTILIZER APPLICATION IN CROP GROWTH[J]. Acta Pedologica Sinica, 2000, 37(3): 380-387 |
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| Authors: | Zeng Xi-bo Qing Chang-le Xie De-ti Hou Guang-jiong |
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| Affiliation: | Upland Res. Center. Institute of Agricultural Natural Resources and Agricultural Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081;College of Resources and Environment, Southwest Agric. Univ., Chongqing 400716;College of Resources and Environment, Southwest Agric. Univ., Chongqing 400716;College of Resources and Environment, Southwest Agric. Univ., Chongqing 400716 |
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| Abstract: | By using the method of pot culture experiment in the case of artificial climate the result indicated that the effects of light intensity(X1)and N application(X2) on lettuce yield(y)were mathematically represented by the following equation in this study: y=-0.375+0.0230X1+9.421X2+0.0251X1X2-0.131×10-4X12-17.794X22;The efficiency of N fertilizer was influenced by light intensity. A quadratic multinomial equation y=b0+b1X + b2X2, could be used to describe the correlation between N application and lettuce yield. Also, quadratic or cubic multinomial equation could be used to describe the correlation between light and lettuce yield. Accordingly, the effects of light intensity(X1)on N application (X2) were mathematically represented by the following equation: X2=0.446-0.477×10-2X1+0.269×10-4X12-0.394×10-7X13. Moreover, nitrogen nutrition of lettuce was bigger influenced by light and N application. |
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| Keywords: | Lettuce(Lactuca sativa Var. angastana lrish.) N fertilizer Light intensity Yield |
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