The Chinese Academy of Agricultural Sciences has created a new technology system for high-yield green production of corn densely planted

xinhua News Agency, Beijing, September 27 (Reporter Dong Jun) China's agriculture
a scientific research team after many years of research, the creation of corn dense planting high-yield potential mining, mechanical grain harvest and the whole mechanized production, water fertilizer integrated resources efficient use, film replacement and other key technologies, and in the production of large-scale promotion and application.
this is the reporter recently learned from
Agricultural and Crop Science Research Institute. According to Li Shaokun, head of the institute's crop cultivation and physiological innovation team, corn is currently the largest and most prolifable food crop in China, with an average annual growth of 4.1% in the past 10 years, but an average annual growth rate of only 1.3%. It is the long-term work of corn research to increase the yield.
led the scientific research team to collect varieties with high yield potential in the national breeding units and tap the yield potential by increasing planting density. Recently, their corn demonstration field in Qitai County, Xinjiang, was measured to yield a maximum yield of 1663.25 kg per mu, which is the 7th time the team has refreshed China's corn production record.
At the same time, the researchers to plant high-yield, precision on-demand, mechanical fertilization, mechanical medicine, straw return to the field, mechanical grain harvest and other key technologies as the core, integrated the corn dense planting high-yield whole mechanized production technology system, to achieve high-yield and efficient coordination.
traditional corn cultivation methods have a greater demand for water and fertilizer, how to achieve higher yields with less water and fertilizer, is also the focus of scientific researchers. The integrated resource efficient utilization technology developed by this research team integrates dense planting high yield and drip irrigation and fertilization technology, which can be used to deliver water and nutrients evenly and continuously to soil near the root of the crop according to the soil nutrient content and crop type, and the utilization rate of water fertilizer is increased by more than 30%, and the water production efficiency is 2.5 kg to 3.0 kg per cubic meter.
film cover has played a great role in increasing corn yield, but also brought about the problem of residual film pollution. By selecting early and medium-ripe corn varieties suitable for local thermal resources and increasing the planting, the researchers achieved the goal of replacing or reducing the amount of film used, increasing corn yield by an average of 9.5% to 12.6% per acre and saving 65 yuan to 70 yuan. In Inner Mongolia, the integrated production technology of shallow-buried drip irrigation fertilizer without film has been widely used.