行距对马铃薯农艺性状及产量的影响

试验采用随机区组试验设计,大垄双行,整薯播种。在同一密度下对不同行距间的各指标进行比较及单因素方差分析。旨在为马铃薯生产和机械化作业提供理论依据。结果表明:在12株·m~(-2)和9株·m~(-2)的种植密度下,主茎数、结薯数、产量都是随行距的增加而呈现递减的变化趋势;在7.2株·m~(-2)的种植密度下,主茎数、结薯数、产量是随行距的增加而呈现增-减-增的变化趋势;同一密度下,淀粉含量随行距增加变化不明显,大部分维持在15%~16%之间。总体来看,同一密度下不同行距间对主茎数、结薯数、产量及淀粉含量的影响均差异不显著。

Effect of Different Row Spacing on Agronomic Characters and Yield of Potato

T he experiment used randomized trial design,whole potato sowing and big ridge double line to study the single factor variance analysis of various indexes of different row spacing under the same density and compare the analysis results. The aim was to provide theoretical basis for the production and mechanization of potato. Results showed that the number of main stem,tuber number and yield appeared a decreasing trend with the increase of row spacing under the planting density of 12 plants·m-2 and 9 plants·m-2. The number of main stem,tuber number and yield showed a increasing-decreasing-increasing trend with the increase of row spacing under the planting density of 7.2 plants·m-2. There was no obvious change in starch content with the increase of row spacing under the same planting density. Most of the maintenance was between 15% and 16%. Overall view,the different row spacing on the main stem number,tuber number,yield and starch content had no significant difference under the same planting density.