期刊论文、会议论文

Li, D.(lds1010@sina.com)

中文

农业工程学报

1002-6819

2009

25

1

171-175

2010年中国设施农业可持续发展论坛

2010年中国设施农业可持续发展论坛论文集

2010-04-16

北京

中国农业工程学会

国家自然科学基金资助项目(30771259);高等学校博士学科点专项科研基金(20060299003);江苏省自然科学基金(BK 2006076)

本校为其他机构

为了精确模拟不同光照下温室黄瓜光合作用的变化规律,提出了一种类卡方模型(QCSM)进行建模。使用Li-6400便携式光合测定系统测定了温度分别为16℃、20℃、24℃、26℃、28℃、30℃和光量子流通量密度(PPFD)为0～2000μmol/(m2·s)动态条件下温室黄瓜叶片净光合速率(Pn),以Pn测定值为基础对QCSM参数进行了模拟。结果表明:QCSM拟合得到的黄瓜叶片净光合速率估计值Pn与实测值Pn相符。经过前一年的数据验证,模型精度较高,拟合优度达0.9908,残差标准误差(RSE)为0.4537。与负指数模型(ME)相比,QCSM净光合速率估计值与实测值较接近,同时,QCSM能得到包括光饱和点、补偿点、最大光合速率、暗呼吸、表观量子...

In order to exactly simulate the rule of greenhouse cucumber Photosynthesis under different photosynthetic photo flux density (PPFD), a model named quasi-chi-square model (QCSM), was established. Net photosynthetic rate (Pn) data of cucumber leaf were measured by Li-6400 Portable Photosynthesis System under dynamic conditions of temperature being 16, 20, 24, 26, 28, 30°C, respectively, and PPFD being 0~2000 μmol/(m2 &middot s), and based on the measured values of Pn, parameters of QCSM were fitted. The results showed that the estimated net photosynthetic rate data of Pn by the model wer...