木薯不同方式机械化种植对土壤理化性状和产量影响研究

为了探讨木薯不同方式机械化种植对土壤理化性状和产量的影响，以木薯品种‘华南205’为试验材料，分别采用宽窄行种植、等行距种植和小行距大株距种植3种机械化种植方式，对土壤理化性状和木薯产量进行研究。结果表明：与等行距和小行距大株距相比，木薯采用机械宽窄行种植，可降低土壤容重、增加土壤孔隙度、增加土壤通气性；增加土壤速效氮、磷、钾供应能力；同时木薯出苗率也增加，还可促进木薯生长及块根形成，提高木薯产量。与相同密度等行距种植方式相比，宽窄行种植土壤容重降低了2.56%，土壤孔隙度增加了2.87%，产量增加了8.07%。由此可见，宽窄行种植对于木薯机械化生产具有较强的适应性，有进一步进行试验、示范、推广的价值。

Studies on the Effects of Mechanization Cultivation in Different Planting Patterns on the Physical and Chemical Character of Soil and the Root Tubers Yield of Cassava

This study investigated the effects of mechanization cultivation in different planting patterns on the physical and chemical character of soil and the root tubers yield of cassava. The cassava cultivar SC205 was used as material, and the planting patterns of wide-narrow row, equidistant row and small row spacing-large plant spacing were compared in this study. The physical and chemical character of soil and the root tubers yield of cassava were analyzed during the experiment. The results showed that, compared with the planting patterns of the equidistant row and small row spacing-large plant spacing, the planting patterns of wide-narrow row not only could decrease the soil unit weight, increase the holes percent of soil, promote microbe activity in the soil, increase the contents of soil available N, P, K, but also promote the germination percentage, promote the stems and leaves of cassava growth, increase the yield of cassava. Besides, compared with the planting patterns of the equidistant row which had the same plant density with wide-narrow row, the planting patterns of wide-narrow row those the soil unit weight decreased by 2.56%, the holes percent of soil increased by 2.87%, and the yield of cassava increased by 8.07%. This showed that the planting patterns of wide-narrow row was adapted to the mechanization cultivation in cassava, it was valued in further experiment, demonstration and promotion.