不同行距播种方式对大力士甜高粱生产性能的影响——以三峡库区石漠化地区为例

目的]探讨石漠化地区不同行距播种方式对大力士甜高粱生产性能的影响。方法]在三峡库区石漠化地区的单因素随机区组试验设计中,行距采用宽窄行、等行距2种方式,设4个播种处理,研究不同播种方式对大力士甜高粱生产性能的影响。结果]物候期观测表明,不同播种处理对大力士甜高粱物候期的影响不大。方差分析表明,不同播种模式对大力士甜高粱的叶长和茎周长的影响达极显著水平,对产量、株高、叶宽、茎叶比的影响显著,对分蘖数的影响不显著。不同行距播种方式对大力士甜高粱产量的影响为：等行距35cm∶35cm〉宽窄行70cm∶35cm〉等行距50cm∶50cm〉宽窄行100cm∶40cm。最优行距播种方式为：等行距35cm∶35cm,产量达到61400.00kg/hm2。结论]该研究为甜高粱在三峡库区的优质高产栽培提供科学依据。

Effect of Different Raw Spacing Sowing Modes on Production Performance of Hercules Sweet Sorghum

Objective]The study aimed to discuss the effect of different raw spacing sowing modes on production performance of Hercules sweet sorghum in stony desertification area.Method]In the randomized block experiment design with single factor in the stony desertification area of Three Gorge reservoir area,2 raw spacing modes was taken as the equal row spacing and wide narrow row spacing and 4 seeding treatments were set up to study he effect of different raw spacing sowing methods on production performance of Hercules sweet sorghum.Result]The observation on the phenological period showed that the different raw sowing treatments had little effect on the phenological period of Hercules sweet sorghum.The variance analysis indicated that the different sowing modes had extremely significant effects on the leaf length and stem circumference,had the significant effects on yield,plant height,leaf width and the ratio of stem and leaf and had no significant effects on the tiller number.The effects of different raw spacing sowing modes on the yield of Hercules sweet sorghum was follows:equal row spacing of 35 cm :35 cm > wide narrow row spacing of 70 cm :35 cm > equal row spacing of 50 cm :50 cm > wide narrow row spacing of 100 cm :40 cm.The optimum raw spacing sowing mode was the equal row spacing of 35 cm :35 cm,which made the yield of Hercules sweet sorghum at 61 400.00 kg/hm2.Conclusion]the study provided the scientific basis on the good quality and high yield cultivation in the stony desertification area of Three Gorge reservoir area.