The paper observed the influence of different modes and periods of film mulching by trial on soil moisture and temperature, growth period, biological traits and yield of dry land corn, water use efficiency and economic benefit. By analysis it conclude that full membrane coverage is superior to half membrane coverage, and early membrane coverage is better than late membrane coverage. The best cultivation method of corn in this region is double furrow sowing with full membrane coverage and uncovering the membrane in early spring based on the expansion of double furrow sowing with full membrane coverage in fall.