Abstract:

Planting rapes with no-tillage sowing in plastic film corn field could solve the problems such as dryland direct-seeding rape in southwestern mountainous, such as soil water shortage at sowing time, ground temperature relatively low, labor force general deficiency, field management extensive, yield and production value respectively lower. Planting pattern and efficiency analysis of rapes in different planting patterns were studied, in order to evaluate the planting pattern and feasibility of planting rapes with no-tillage sowing in plastic film corn field. Take the general planting pattern as control, the comparative research of three planting pattern including removing membrane, breaking film, residual layer pattern were studied in the same field. The breaking film hill seeding cultivation pattern could promote the full stand of seeding and seedling growth by heat-insulating and humid-holding property of residual membrane in plastic film corn field. The yield could reach 4023.00 kg/hm2, by this cultivation pattern with no-tillage sowing, the production value was up to 18103.50 yuan, the net income attained 8053.50 yuan and the input-output ratio was 1:1.80. The production value and net income respectively was 18.95% and 92.01% higher than that of the conventional plow tillage cultivation pattern. It was viable to plant rape with breaking film and removing membrane, in dryland and low temperature areas. This planting pattern had the advantage of low-input, a saver of time and strength, high-yield, high-value and in favor of spread and exploitation in large area.