Maize Monoculture in Northeast China: Challenges and Limitations

According to the standards of the 'Field Crops Research' journal, the sentence 'Maize is primarily cultivated as a monoculture in Northeast China, where the growing seasons are relatively longer. Lower temperatures at the vegetative stage couple with seasonal droughts during the reproductive stage is the critical limitation for maize density increasing in this region (Liu et al., 2012).' can be improved for clarity and readability.

'Maize is primarily cultivated as a monoculture in Northeast China, where the growing seasons are relatively longer. Lower temperatures during the vegetative stage, coupled with seasonal droughts during the reproductive stage, are critical limitations for increasing maize density in this region (Liu et al., 2012).'