Mid-season lodging modulates photosynthesis, evapotranspiration, and dry matter accumulation and distribution simulated by the optimized model in maize

Introduction Mid-season lodging in maize ( Zea mays L.) often restricts grain yield potential and is a great hurdle improving production efficiency. The aim of this research was to study the effects on photosynthesis, evapotranspiration, dry matter accumulation, distribution population. Methods We examined Zhengzhou Agro-meteorological station August 2016, following strong wind process. Based observational data crops, meteorology, CO 2 /H O flux from milk maturity normal growth year (2017), model population photosynthesis evapotranspiration under conditions constructed. validated used simulate theoretical value years (2016), then measured after calculated based maize, difference between simulated (2016) compared analyzed. correlation accumulation photosynthetic order estimate reduction lodging. effect distribution, analyzed using field biomass data. could accurately characteristics summer maize. Results absolute error values 2017 −0.43 mg m −2 s −1 , relative −3.3%; −0.005 mm·30 min −10.7%. In significantly lower than value, daily average rate decreased by 13.99 or 53%. Under same condition, 1.03 mm d 28%. process altered weight stem sheath increased 5.5% ear 10.9% lodging, without but there no significant leaf weight. After proportion 3.0%, while 3.0%. 100-grain plant 2.8 10.8%, respectively. According density theory computation yield, entire reduced 5.0%.