关键词: 改良型塑料大棚, 改良型塑料大棚, 温度, 利用率, 建造成本, 收益

Abstract:

Wheat/Corn Double Cropping System is the main farming system in Shandong Province, which plays an important role in grain production in Shandong Province. By using field experimental data, theoretical analysis and empirical research, macro and micro analysis of the combination of methods, this paper systematically analyzed the major limiting factors impacting wheat-corn potential productivity, and provided the corresponding improvement measures. The results showed that in the production of wheat and corn double cropping system, there were many constraints, such as imperfect supporting of fine seed and fine method, poor quality sowing, unreasonable fertilization, serious diseases and so on. Therefore, the further improvement of technology content in the production of maize and wheat cropping system could fully excavate the annual grain yield potential, and achieve wheat-corn sustainable high yield. This would had the very important significance for improving grain comprehensive production capacity, ensuring food security, promoting economic and social development and so on in Shandong Province.