Experts pointed out that more than 20% of the increase in corn production comes from the increase in planting density. In recent years, the Agricultural Industry Research Project “Research and Demonstration on Spring Sowing Techniques for Maize Steady Production in Northeast China†undertaken by the Crop Research Institute of the Chinese Academy of Agricultural Sciences and the Central Research Center of the Jilin Academy of Agricultural Sciences has been devoted to the research of dense planting and lodging control technologies in the rain-fed areas in Northeast China. , Formed an alternating leisure deep soil, deep spin and precision seeding and chemical control measures and other comprehensive technical systems, and conquered the technical problems of increasing density and increasing production of spring maize in Northeast China.
According to project leader Zhao Ming, a researcher at the Chinese Academy of Agricultural Sciences, the study broke through two techniques of deep soil loosening. First, it formed a wide-narrow row farming method that was deep in every year, seedling rotation, alternating leisure, and developed and selected suitable Deep loose equipment. The second is the innovative development of a deep-spin precision combing planter that will effectively integrate corn fertilization, deep spinning, fine sowing, repression, and replenishment, increase maize emergence rate and uniformity, and continuously increase the yield per unit of corn; Anti-decay technology effectively integrates chemical control technology with fertilizer and water control, and arrangement of plant spacing, and establishes a chemical control technology system for densification and high-yield.
It is understood that the application of high-yielding cultivation techniques for deep-season cultivation of spring corn in Northeast China has enabled effective innovation and integration. It has established more than 100 mu of positioning experimental fields and 4,000 mu of fixed demonstration fields in the northeast region, and has been established in the corresponding provinces, cities and districts. The promotion of the area has achieved significant yield-increasing effects and economic, social and ecological benefits. Accumulated a total of 113,000 acres of demonstration fields, compared with the local three years before the mu yield increased by 10% to 30%, an average yield of 90 kilograms per mu, a total increase of 10207.6 tons of grain, an increase of 12.7984 million yuan of benefits.
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