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首页> 外文期刊>Forests >Effects of Canopy Microclimate on Chinese Chestnut ( Castanea mollissima Blume) Nut Yield and Quality
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Effects of Canopy Microclimate on Chinese Chestnut ( Castanea mollissima Blume) Nut Yield and Quality

机译：冠层微气密对栗子（Castanea Mollissima Blume）螺母产量和质量的影响

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摘要

There are considerable differences in chestnut yield and quality across different chestnut-producing regions in China, indicating that environmental factors affect these properties of chestnuts. Furthermore, nut yield and quality differ depending on canopy position. Therefore, this study investigated the relationship between the canopy microclimate, nut yield, and quality. We determined microclimate factors from blossoming to ripening at different positions in the canopy. Nut yield and quality and the number of different branch types were measured at various canopy positions. The light intensity and temperature of the different canopy layers exhibited funnel-form distributions ranging from 0 to 3600 μmol·m 2 ·s ?1 and from 32 to 37 °C, respectively. Canopy humidity showed an inverted funnel-shaped distribution ranging from 26% to 40%. Nut yield and quality in the top and outer canopies were higher than in the bottom and inner canopies. Branches in the top-middle and peripheral parts of the canopy also produced higher yields, especially strong branches that bore more nuts. Nut yield and quality had positive correlations with light intensity (r = 0.735) and temperature (r = 0.709), whereas they were inversely associated with humidity (r = ?0.584). The nut yield was more than 200 gm ?3 when the light intensity was above 1500 μmol·m 2 ·s ?1 , the temperature was above 34.4 °C, and the humidity was below 27.5%.
机译：中国不同栗子产区的栗子产量和质量存在相当大的差异，表明环境因素影响了栗子的这些性质。此外，螺母产量和质量取决于冠层位置。因此，本研究调查了树冠微节，螺母产量和质量之间的关系。我们确定从冠层中的不同位置开花的小气候因素。在各种遮篷位置测量螺母产量和质量和不同分支类型的数量。不同的冠层层的光强度和温度分别显示出漏斗形分布，分别从0到3600μmol·m 2·s≤1和32至37℃。冠层湿度显示倒置的漏斗状分布，范围为26％至40％。顶部和外檐的螺母产量和质量高于底部和内檐篷。顶层顶部和周边部分的分支也产生了更高的产量，特别是强大的螺母的强分支。螺母产量和质量与光强度（r = 0.735）和温度（r = 0.709）具有正相关性，而它们与湿度相反（r = 0.584）。当光强度高于1500μmol·m 2·s≤1时，螺母产率大于200克3，温度高于34.4℃，湿度低于27.5％。

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