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本项研究以建平县为基点，采用田间试验与系统分析相结合的方法，配合温饱工程的实施，对地膜覆盖栽培技术在辽西北地区耕作制度发展中的作用，从定性到定量进行了系统研究．结果表明：地膜覆盖栽培技术这项配套的现代化技术密集型农业投入，在气侯干旱、土壤瘠薄、生育期短、经济欠发达的辽西北地区有显著的保墒增温作用，它协调了太阳辐射与土壤水、肥、气、热之间的关系，可充分发挥高产作物及经济作物的增产潜力；稳定地解决当地存在的粮食不足问题；为当地农民发展经济作物，退耕还草，发展牧业提供了可靠的物质保证．
Taking Jianping County as the basic point, this study adopted the method of field experiment and systematic analysis, and combined with the project of food and clothing, the paper studied the effect of plastic film mulching cultivation in the development of farming system in Northwest Liaoning from qualitative to quantitative the study. The results show that the modern technology-intensive agricultural investment, which is covered by plastic film mulching and cultivation technology, has a significant effect of warming soil moisture in northwestern Liaoning, which is characterized by arid climate, infertile soil, short growth period and underdeveloped economy. It coordinates solar radiation With the relationship between soil water, fertilizer, gas and heat, it can give full play to the yield potential of high-yield crops and cash crops; solve the problem of insufficient grain locally; develop cash crops for the local farmers, return farmland to grassland and develop livestock husbandry Provides a reliable material assurance.