Research and application on canopy-topsoil optimization technology system of high yield for maize

Research and application on canopy-topsoil optimization technology system of high yield for maize  (The second award of national science and technology progress in 2015）：In order to resolve plant lodging and premature senescence with high density, which are the restricting problems to improve maize high yielding. Zhao Ming team of the institute of crop science, Chinese academy of agricultural sciences, established the canopy-topsoil optimization technology system, which aimed at synchronous optimization of the canopy and topsoil, created three key technology, i.e., "three modify -subsoiling", "three resist- chemic regulating”, and “three adjust-dense planting”. Innovated three dense planting technology pattern for high yield and efficiency, i.e., "deep layer- dense canopy", "control plant type - promoting the root", and "improving soil fertility - high fertilizer effeciency", by the integration effects of the three key technology. The innovated key technology and technology pattern were listed as one of main technology for MOA and others, which promoted in maize plant area of 8 million ha, cumulative increase maize yield of 8.34 billion kg, and cumulative increase economic benefit of 14.32 billion yuan, in the 7 provinces in Northeast and Huang-Huai-Hai Plain of China form 2012 to 2015.

The Principal Researcher：ZHAO Ming