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在玉米生产过程中，群体中产生小弱苗是普遍存在的问题，也是广大科技工作者十分关注的问题，对玉米产量的构成有着直接的影响。针对这一问题1998年对本团的大田生产玉米作了大面积的调查研究，并在定点试验记载数据中得出的结论是：玉米SC704品种，为垦区主栽品种，留苗密度一
In the process of corn production, it is a ubiquitous problem to produce small and weak seedlings in the group. It is also a matter of great concern to the majority of scientists and technicians. It has a direct impact on the composition of corn production. In response to this problem in 1998, we conducted a large area survey on the production of maize in our field and concluded from the data recorded in the fixed-point test that the maize SC704 cultivar is the main cultivar of the reclamation area with a density of one