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黑龙江省大豆重迎茬研究目前取得突破性进展,可实现迎茬大豆不减产,重茬大豆减产降低10个百分点。该省每年大豆播种面积都在3500万亩左右,重迎茬问题十分严重。1994年,省科技厅组织省农科院、东北农大、中科院黑龙江现代化研究所、八一农垦大学等单位,对重迎茬影响大豆生产的机理与技术对策开展研究。科研人员在该省五个生态区设立固定的轮作区,通过试验和生产调查,找出了大豆重迎茬减产的原因与机理,明确了迎茬和不同重茬年限大豆减产幅度和品质变化。同时,他
At present, the study of soybean in Heilongjiang Province has achieved a breakthrough, so that the soybean yield in stubble crop can be reduced and the yield reduction of stubble soybean crop reduced by 10 percentage points. The sown area of soybean in the province is about 35 million mu each year, and the problem of re-stubble planting is very serious. In 1994, the Provincial Department of Science and Technology organized Provincial Academy of Agricultural Sciences, Northeast Agricultural University, Chinese Academy of Sciences Heilongjiang Institute of Modernization, August 1 Land Reclamation University and other units, to study the mechanism and technical countermeasures of influencing the soybean production. Researchers in the province’s five ecotopes to establish a fixed rotation area, through the test and production survey to identify the reasons and mechanism of heavy cropping soybean yield reduction, clear cut and different cropping years of soybean yield reduction and quality changes. At the same time, he