The effect of different rainfall years and different water and nitrogen management ways on winter wheat and summer maize was studied in northern part of north China Plain.
在华北平原北部研究了不同降水年型、不同水氮管理措施对冬小麦和夏玉米产量和氮素平衡的影响。
It has some value to the design and management of the water obtainment and heating system in winter.
对于深井水源热泵的取水系统设计、冬季制热运行的管理有一定参考价值。
For the promotion and management of water conservancy construction in winter and spring, Guangxi has probed into new system and made breakthrough at practice in recent years.
近年来，广西在冬春水利建设推动机制和管理体制探索上迈出了新步伐，取得了突破性实践成果。
For the promotion and management of water conservancy construction in winter and spring, Guangxi has probed into new system and made breakthrough at practice in recent years.
近年来，广西在冬春水利建设推动机制和管理体制探索上迈出了新步伐，取得了突破性实践成果。
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