Academy of Hunan Agricultural science

Changsha, China

Academy of Hunan Agricultural science

Changsha, China

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Zhou J.,Academy of Hunan Agricultural science | Yin X.,Institute of Wuzhou Agricultural science | Chen C.,Guangxi University | Huang M.,Guangxi University | And 2 more authors.
Zhongguo Zhongyao Zazhi | Year: 2010

Objective: To find out the optimal nitrogen application level of Desmodium styracifolium. Method: A field experiment using randomized block design was carried out to study the effects of 5 nitrogen application levels (150, 187.5, 225.0, 262.5 and 300.0 kg·hm-2) on yield and active component content of D. styracifolium. Result: Nitrogen application could increase the yield and contents of polysaccharide, total flavonoides and total saponins of D. styracifolium. However, the enhancing extent of the active component content and the yield were not always significant with the increase of nitrogen level. In which, the yield were not significantly different among the nitrogen application levels of 225.0, 262.5, 300.0 kg·hm-2 the polysaccharide content was no significantly difference among the nitrogen application levels of 225.0, 262.5 and 300.0 kg·hm-2, the total flavonoides content under the nitrogen level of 300.0 kg·hm -2 was significantly lower than that of 150.0 kg·hm -2 (P < 0.01), and the total saponins content under the nitrogen level of 300.0 kg·hm-2 was no significant difference compared with that of 262.5 kg·hm-2. Conclusion: The optimal nitrogen application level of D. styracifolium was 225.0-262.5 kg·hm-2.


PubMed | Academy of Hunan Agricultural science
Type: Journal Article | Journal: Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica | Year: 2010

To find out the optimal nitrogen application level of Desmodium styracifolium.A field experiment using randomized block design was carried out to study the effects of 5 nitrogen application levels (150, 187.5, 225.0, 262.5 and 300.0 kg x hm(-2)) on yield and active component content of D. styracifolium.Nitrogen application could increase the yield and contents of polysaccharide, total flavonoides and total saponins of D. styracifolium. However, the enhancing extent of the active component content and the yield were not always significant with the increase of nitrogen level. In which, the yield were not significantly different among the nitrogen application levels of 225.0, 262.5, 300.0 kg x hm(-2) the polysaccharide content was no significantly difference among the nitrogen application levels of 225.0, 262. 5 and 300.0 kg x hm(-2), the total flavonoides content under the nitrogen level of 300.0 kg x hm(-2) was significantly lower than that of 150.0 kg hm(-2) (P < 0.01), and the total saponins content under the nitrogen level of 300.0 kg x hm(-2) was no significant difference compared with that of 262.5 kg x hm(-2).The optimal nitrogen application level of D. styracifolium was 225.0-262.5 kg x hm(-2).

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