---

作 者 ：刘开昌, 张秀清, 王庆成, 王春英, 李爱芹

期 刊 ：植物生态学报 2000年 24卷 4期 页码：489-493

关键词：玉米；密度；小气候；群体；

Keywords:Maize (Zea mays L. ), Plant density, Microclimate, Canopy,

摘 要 ：系统研究了两个玉米(Zea mays L.)品种不同密度群体冠层内光合有效辐射、CO2浓度、温度、风速、相对湿度等小气候因子垂直分布及其变化。指出，密度能显著影响小气候因子在群体中的分布，并最终反映在群体的有效贮积能量上。通过合理密植能调节群体结构、充分利用小气候资源，获得较高有效贮积能量。

Abstract:The canopy microclimate of two new maize hybrids was studied under high yield condition in 1997-1998, farm-based field experiment in Jinan. Photosynthetic photon flux density (PPFD), CO2 concentration, air temperature, and wind velocity were significantly affected by plant density. The role of microclimate in affecting levels of available stored energy in grain was confirmed, and it is suggested that higher available stored energy could be obtained in grain by adjusting plant density and thereby adjusting microclimate.

---