论文部分内容阅读
光合产物分配是作物生长发育及生物量形成的关键环节,也是作物生长模拟的重要内容.本研究依据光合产物分配机理,结合玉米不同生长阶段的光合产物分配特点,构建了玉米光合产物分配模型.与WOFOST模型的CO_2同化模块相结合,实现了对玉米各器官生物量动态的逐日模拟.利用锦州农田生态系统野外观测站5年的春玉米大田试验资料对模拟效果进行了验证.结果表明:模型能解释总生物量变化的95.4%;对营养器官生物量变化的解释率达87.0%;对叶、根、茎生物量变化的解释率分别达85.3%,67.9%和76.5%;对穗生物量变化的解释率达87.5%.模型可实现玉米各器官的生物量动态的准确模拟.
The distribution of photosynthetic products is a key part of crop growth and biomass formation and also an important part of crop growth simulation.According to the mechanism of photosynthate distribution and the characteristics of photosynthate distribution in different growth stages of corn, Combining with CO 2 assimilation module of WOFOST model, the daily biomass dynamics of maize were simulated daily.The simulation results were validated by using spring maize field experiment data of Jinzhou farmland field observation station for 5 years.The results showed that model 95.4% of the total biomass could be explained, 87.0% of the biomass of vegetative organs could be explained, 85.3%, 67.9% and 76.5% of the explained biomass of leaves, The rate of explanation is 87.5% .The model can accurately simulate the biomass dynamics of various organs of corn.