Windspeed Distribution Pattern of the Top of Rice Canopy Based on Isolated Cloth’s Protection

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (9) : 61-65. DOI: 10.11924/j.issn.1000-6850.2013-1875
23

Windspeed Distribution Pattern of the Top of Rice Canopy Based on Isolated Cloth’s Protection

Author information +
History +

Abstract

In order to determine the isolation protective effect of genetically modified (gm) rice genetic drift, the field trials of the isolation protective measures had been designed. According to the experimental data and the characteristics of the windspeed distribution in protective isolation area, the speed distribution pattern of windward and leeward in protection zone had been established and the applicability of the model had been tested by the measured data. The results showed that: correlation coefficients of leeward side in each model were above 0.95. But because of different observation height and direction angle, there was a certain difference in model coefficient. The average relative error between simulated values and measured values in windward side mode was less than 10%. However, the model built in this research had limitations, and the scope of application was very limited.

Key words

protection of isolation cloth; rice canopy; windspeed distribution pattern

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations
Windspeed Distribution Pattern of the Top of Rice Canopy Based on Isolated Cloth’s Protection. Chinese Agricultural Science Bulletin. 2014, 30(9): 61-65 https://doi.org/10.11924/j.issn.1000-6850.2013-1875

References

[1] Song Z P, Lu B R, Zhu Y G, et al. Gene flow from cultivated rice to the wild Species (Oryzarufipogon) under experimental field conditions[J].New Phytologist,2003,157:657-665.
[2] Song Z P, Lu B R, Chen J K. Pollen flow of cultivated rice measured under experimental conditions[J].Biodiversity and Conservation,2004,13:579-590
[3] 刘寿东,李仁忠,胡凝.南京开花期稻田贴地层微气象特征研究[J].安徽农业科学,2008,36(16):6701-6703,6707.
[4] Cleugh H A. Effects of windbreaks on airflow, microclimates and crop yields[J].Agroforestry Systems,1998,41:55-84.
[5] Cornelis W M, Gabriels D. Optimal windbreak design for winderosion control[J].Journal of Arid Environments,2005,61:315-332.
[6] 罗国清.确保杂交水稻种子纯度的技术措施[J].现代农业科技, 2007(18):147.
[7] 李朝霞,李永凤,甘坤俊.提高杂交水稻种子生产纯度技术探讨[J].种子,2005,24(1):79-80.
[8] Van Eimern J, Karschon R, Razumova L A, et al. Windbreak and shelterbelts of WMO[J].Tech. Note,1964(59):188.
[9] Jensen M. Shelter effect- investigations into the aerodynamics of shelter and its effects on climate and crop[J].The Danish Technical Press, Copenhagen, 1961.
[10] 张翼,卫林.透风林带防护区中风结构的模拟研究[J].科学通报,B辑,1984(1):45-47.
[11] 张翼,张厚瑄.林带迎风区中风速分布的模拟研究[J].科学通报, 1986(13):1015-1018.
[12] Woodruff N P, Zingg A W. Wind tunnel studies of shelterbelt models [J].Journal of Forestry,1953,51(3):173-178(6).
[13] 周士威,程致力,尹洁芬.林带防风效应的实验[J].林业科学,1987,23 (1):11-23.
[14] 朱廷曜,周广胜.多条平行林带防风效应的风洞实验研究//防护林体系生态效益及近地面物理特征的观测研究[M].北京:气象出版社,1992:162-168.
[15] 宋兆民,孟平,张翼,等.林带的透风度与林网的防风效应[J].林业科学,1987,23(4):398-405.
[16] 傅抱璞.论林带的结果与防风效能[J].南京大学学报:气象学,1963, 1/2:109-120.
[17] Plate E J. The drag on a smooth flat plate with a fence immersed in its turbulent boundary layer[J].AMSE paper,1964,64-FE-17:12.
[18] 朱廷曜,朱劲伟.森林防风作用的风洞实验研究——有效防护距离拟合公式的不正及其应用[J].农业气象,1981(1):76-81.
[19] 宋兆民,孟平,张翼,等.林网方位与防风效应野外模拟试验研究[J].林业科学研究,1989,2(1):71-77.
[20] 张翼,宋兆民,卫林.林网中风速分布规律和防风效益[J].中国科学, B辑,1986(9):943-956.
[21] 卫林,张翼.林带下风防护区中风速水平分布的研究[J].中国科学,B辑,1987(11):1188-1197.
[22] 周业娴,刘寿东,胡凝,等.基于隔离布防护的水稻冠层上方风速分布特征[J].中国农学通报,2011,27(21):28-31.
[23] Hagen L J, Skidmore E L. windbreak drag as influenced by porosity [J].Transaction of the ASAE,1971:64-465.
Share on Mendeley

Collection(s)

Rice

18

Accesses

0

Citation

Detail
Sections
Recommended

/

〈 〉