宁夏六盘山区机艺融合下不同种植模式对鲜食萝卜生长影响研究

Study on the Effect of Different Planting Patterns on the Growth of Fresh Raphanus sativus under Mechanical Integration in Liupan Mountain District

针对宁夏六盘山区萝卜农机农艺融合度低问题,探究了单垄单行(DD)下14,16和18 cm种植密度及单垄双行(DS)下20,24和28 cm种植密度模式对萝卜生产的影响,以筛选出适宜萝卜栽培的机械化融合模式。结果表明,单垄单行种植模式下,种植密度增大叶长相对生长率显著降低;单垄双行种植模式下,叶长、叶宽、根直径、叶片数相对生长率均会随着种植密度的增大而呈先降后升的趋势;单垄单行、双行种植模式对萝卜的品质无显著影响。DS-X24处理中类胡萝卜素含量最高,在经济效益上DS-X28处理的产值最高,萝卜机械化单垄双行种植模式对萝卜经济效益影响优于单垄单行种植模式。通过主成分分析及隶属函数排序各处理综合得分,得出DS-X28处理最优。因此,宁夏六盘山区鲜食萝卜机械化种植可采用单垄双行、种植密度为28 cm的种植模式。

Aiming at the problem of low integration of agricultural machinery and agronomy of Raphanus sativus in Liupanshan Distract of Ningxia,the effects of planting density of 14,16 and 18 cm under single ridge and single row(DD)and planting density of 20,24 and 28 cm under single ridge and double row(DS)on Raphanus sativus production were explored,and the mechanized integration mode suitable for Raphanus sativus cultivation was screened.The results showed that under the single ridge and single row planting mode,the relative growth rate of leaf length decreased significantly with the increase of planting density.Under the single ridge and double row planting mode,the relative growth rate of leaf length,leaf width,root diameter and leaf number decreased first and then increased with the increase of planting density.These two planting patterns had no significant effect on the quality of Raphanus sativus,the carotenoid content was the highest in DS-X24 treatment.In terms of economic benefits,the output value of DS-X28 treatment was the highest,and the effect of mechanized single ridge double row planting mode on the economic benefits of Raphanus sativus was better than that of single ridge single row planting mode.Through principal component analysis and membership function ranking,the comprehensive score of each treatment was obtained,and the DS-X28 treatment was the best.Therefore,the mechanized planting of fresh Raphanus sativus can adopt the planting mode of single ridge double row and planting density of 28 cm,which provides a theoretical basis for the mechanized production of fresh Raphanus sativus in Liupanshan Distract of Ningxia.