摘要
采用裂区设计,研究了不同种植密度和不同留苗方式下的木薯产量和经济收益差异。结果表明:不论单杆留苗方式,还是双杆留苗方式,随着木薯种植密度的增加,其木薯产量、木薯产值和经济收益均随之增加。在单杆留苗方式下,高、中密度比低密度的产量分别增加128.73%、73.83%,木薯产值分别增加62.49%、113.71%,而经济收益分别增加126.30%、228.90%;在双杆留苗方式下,高、中密度比低密度的产量分别增加65.07%、35.03%,木薯产值分别增加50.91%、84.49%,经济收益分别增加84.40%、138.97%;在等密度条件下,双杆留苗方式的产量、木薯产值和经济收益均高于单杆留苗方式,在高、中、低密度时产量分别增加7.84%、16.08%和49.43%,木薯产值分别增加10.73%、24.18%和52.40%,经济收益分别提高7.75%、15.82%和24.61%。方差分析表明,种植密度对木薯产量的影响极显著,留苗方式的影响显著,但二者之间的相互作用的影响不显著。
An experiment was conducted with split-plot design to study the differences in yield and economic benefit of cassava under different planting densities and different ways of left seedlings in Jiangxi province.The results showed that no matter with the way of left single seedlings or the ways of left double seedlings,the yield,output value and economic benefit of cassava all increased with increasing planting density.With the way of left single seedlings,in comparison with the group of low planting density,the group of high planting density and the group of middle planting density respectively increased by 128.73% and 73.83% in yield,by 62.49% and 113.71% in output value,and by 126.30% and 228.90% in economic benefit;with the way of left double seedlings,in comparison with the group of low planting density,the group of high planting density and the group of middle planting density respectively increased by 65.07% and 35.03% in yield,by 50.91% and 84.49% in output value,and by 84.40% and 138.97% in economic benefit.With the same planting density,the yield,output value and economic benefit with the way of left double seedlings were all higher than those with the way of left single seedlings,in which the yield of cassava with high,middle and low planting densities increased by 7.84%,16.08% and 49.43%,respectively;the output value with high,middle and low planting densities increased by 10.73%,24.18% and 52.40%,respectively;the economic benefit with high,middle and low planting densities increased by 7.75%,15.82% and 24.61%,respectively.Analysis of variance showed that effect of planting density on cassava yield was extremely significantly,and that of the way of left seedlings on yield was also significantly,while their interaction on yield was not significant.
出处
《湖南农业科学》
2013年第9期24-27,共4页
Hunan Agricultural Sciences
基金
现代农业产业技术体系建设专项资金资助(CARS-12-jxyzq)
关键词
木薯
种植密度
留苗方式
产量
经济收益
cassava
planting density
way of left seedlings
yield
economic benefit
