摘要：Drip irrigation under membrane is a new agricultural technology that can achieve high yield and high efficiency. Through research, it can give full play to its potential of increasing yield and increasing efficiency in current practical production. This paper analysed and summarized the yield limiting factors in current drip irrigation production by studying the yield potential and yield difference. Through model simulation and field experiments, the high-yielding and high-efficiency crop system was designed and verified. The effects of film mulching on greenhouse gas emissions were studied in a small ecosystem. Based on the experimental results show that nitrogen requirement for target yield and the regularity of nitrogen requirement of high-yielding maize optimized nitrogen management compared with farmers 80 kg/ha nitrogen management to reduce nitrogen input, from 350 kg/ha down to about 270 kg/ha output from 11.7 Mg/ha increased to 13.8 Mg/ha, nitrogen partial productivity increased to 51.0 from 33.3 kg/kg, while apparent nitrogen loss decreased to 64.5 from 171.5 kg/ha, showed that optimized nitrogen management is feasible in practice. Mulching can reduce the ecological respiration rate; nitrogen fertilizer can promote the ecological respiration rate.
