By several years' research, what thick-flat planting soybean technology has significant benefit of yield had been asserted exactly as the core of shortening ridge and adding rows.
经过几年的研究，已确切认定以缩垄增行为核心的大豆密植平作技术具有显著的增产效益。
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The factors affecting fibrous roots size besides the planting vegetation, it has signal positive correlation to thickness of soil, thick soil is good to the growth and development of plant roots.