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1·Finally, suitable forage species, right reseeding time, appropriate soil treatments and ideal sowing depth were decided.

最后确定适宜当地补播的牧草种类、补播时期、土壤处理和补播深度等。

2·The effects of different soil water content, depth of sowing and dose of fomesafen on dayflower emergence were studied.

通过提供不同外界环境条件的方法，研究了土壤含水量、播种深度及除草剂虎威对鸭跖草出苗的影响。

3·ObjectiveTo research the influence of sowing time , planting density and plowing depth to the yield and quality of Cynanchum paniculatum (Bge. ) Kitag.

目的考查播种期，种植密度及耕地深度对徐长卿产量和质量的影响。

4·The study developed a new type of sowing machine that is capable of dividing the fertilizer into seed fertilizer and base fertilizer and laying them into a deeper depth while sowing.

研制在播种的同时能将肥料分成种肥、基肥且深施播的新型播种机。