沙打旺形态指数与产草量及水肥关系研究

穆兴民; 陈国良; 贾恒义

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沙打旺形态指数与产草量及水肥关系研究

论文

- 沙打旺形态指数与产草量及水肥关系研究
- The Relationshipes of the Morphological Characters with Astragalus Adsurgens between its Forage Yeild and Soil Moisture and Fertilizer
- 水土保持通报 1995年14卷第1期页码：23-28
- 作者机构：
  
  中国科学院水利部西北水土保持研究所
- 作者简介：
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- 纸质出版：1995
- 稿件说明：
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穆兴民, 陈国良, 贾恒义. 沙打旺形态指数与产草量及水肥关系研究[J]. 水土保持通报, 1995,14(1):23-28.

Mu Xingmin, Cheng Guoliang, Jia Hengyi. The Relationshipes of the Morphological Characters with Astragalus Adsurgens between its Forage Yeild and Soil Moisture and Fertilizer[J]. Bulletin of Soiland Water Conservation, 1995, 14(1): 23-28.
穆兴民, 陈国良, 贾恒义. 沙打旺形态指数与产草量及水肥关系研究[J]. 水土保持通报, 1995,14(1):23-28. DOI：

Mu Xingmin, Cheng Guoliang, Jia Hengyi. The Relationshipes of the Morphological Characters with Astragalus Adsurgens between its Forage Yeild and Soil Moisture and Fertilizer[J]. Bulletin of Soiland Water Conservation, 1995, 14(1): 23-28. DOI：

摘要

叶重、茎重、叶茎比及株高是沙打旺重要的形态学指数。通过盆栽试验，研究了这些形态学指数与产草量的关系，并分析了水肥对这些形态学指数的影响。结果表明：随叶重增加产草量呈幂函数提高；茎重与产草量呈正比关系；随产草量提高叶茎比按负幂函数降低。株高随时间变化呈逻辑斯谛曲线，水肥对沙打旺株高、茎重及叶重呈显着正效应，尤以水分效应显着。

Abstract

Leaf weight

stak weigh

leafand stakweight ratio and heigth of Astragalus Adsurgensall are morphologically important characteres of its above-ground part.It has been studied that therelationship bewteen those characteres and its forage yeild

as well as impacting of soil moisture andfertilizing amount on those characteres with the plot experiement.The resultes show as following:The grass yeild increases with leaf weight as the power function:The grass yeild is directly proportion to its stalk weight. The ratio of grass leaf and stalk weight decreases with its grass mass as negtive power func-tion.The changes of its heigth with time can be very good fitted to the Logistic equation. The effectof soil moisture and fertilizing amount on heigth

stalk weight and leaf weight are all excielentlypositive

which moisture effect is greater than that of fertilizing amount.

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