sowing time and density 播期和密度
The suitable planting density and time of sowing are favor of optimum use of soil water and improving water use efficiency, and make potato increasing its output.
适宜播种密度和播期有利于土壤水分的优化利用和水分利用效率的提高，可促进旱地马铃薯增产。
Influence of variety, density and sowing time on radish yield was studied utilizing orthogonal test.
采用正交试验设计，研究萝卜不同品种、密度、播期对产量的影响。
The growing density of red bean is influenced with various factors such as fertility of soil, annual climate condition and sowing time.
红小豆的密度与土壤肥力的高低、年际气候条件和播期等因素有关。
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