Abstract:

The film covering seeding cultivation techniques of no-tillage much stubble is the dry farming of Gansu Province area planting crop a new cultivation technology, only some experience summary, the increase production, synergism and preservation of soil moisture, ecological and physiological aspects of theory research is almost blank. In view of this, according to the province farming ability station arrangement, we expect through the film covering seeding winter wheat sowing quantity research trials, to film covering seeding winter wheat under the condition of suitable seeding quantity and yield components, grain yield, water use efficiency and other aspects of the correlations were explored. The results showed that: when the seeding quantity of 4414500 grains/hm2, water utilization rate was the highest, amounted to 10.96 kg/(mm?hm2); with the seeding quantity increased, grain yield, water use rate declined. District film covering seeding winter wheat optimum sowing quantity was 4414500-5395500/hm2, 9-11 particle/point, theoretical maximum yield reached 6463.73 kg/hm2.