摘要
探索不同间作方式与种植密度对木薯生长及产量效益的影响,为木薯高产栽培和耕地高效利用提供理论依据。以木薯品种NZ199和46-14为试材,设1 m×0.8 m、1 m×0.7 m、1 m×0.6 m三个种植密度,按照二因素随机区组排列,设置密度试验;以GR911单作为对照,设GR911木薯间作糯玉米、GR911间作木薯46-14、GR911木薯间作花生为间作试验。记载不同处理下木薯块根形态、产量及干物率、淀粉含量,比较不同种植模式的经济效益。结果表明:(1)不同的种植密度对木薯单株结薯数、最大块根长、最大块根直径、单株薯重均会产生不同程度的影响,其中以1 m×0.8 m种植密度的块根生长表现最优,块根淀粉含量及干物率也以1m×0.8m的密度处理最高。(2)木薯间作玉米与木薯套种花生处理的单株结薯数、最大块根长、最大块根直径、单株薯重均优于对照,而木薯间作木薯处理的表现均不如对照,建议生产中不宜采用木薯与木薯的间作模式。(3)GR911间作玉米与花生的经济效益明显高于对照,间作玉米每亩增加经济效益1154.92元,套种花生每亩增加经济效益406.55元。
An attempt was made to explore the effects of different intercropping methods and planting density on cassava growth,yield and benefit to provide theoretical basis for high-yield cultivation of cassava and efficient utilization of cultivated land.The cassava varieties ZN199 and 46-14 were planted at a spacing of 1 m×0.8 m,1 m×0.7 m and 1 m×0.6 m,respectively,and randomly arranged according to the two factors in a density experiment.In an intercropping experiment GR911 was intercropped with waxy corn,cassava 46-14 or peanut,with monoculture of cassava variety GR911 as control.The root morphology,yield,dry matter content and starch content of cassava under different treatments were recorded,and the economic benefits of different planting patterns were compared.The results showed that planting densities had different effects on tuber number per plant,maximum root length,maximum root diameter and tuber weight per plant,among which the planting density at a spacing of 1 m×0.8 m had the best cassava growth performance in root tuber,and the highest starch content and dry matter content of root tuber.The treatment with cassava intercropped with maize or peanut was higher in number of tubers per plant,maximum root length,maximum root diameter and tuber weight per plant than the control,while the treatment with cassava intercropped with cassava was lower in performance than the control,suggesting that the intercropping pattern of cassava+cassava should not be used in production.The economic benefit of the treatment with GR911 intercropped with maize or peanut was significantly higher than that of the control.The economic benefit of the treatment with GR911 intercropped with maize or peanut increased by 1154.92 yuan·mu–1(1/15 ha)and 406.55 yuan per mu,respectively.
作者
罗亚红
杨龙
罗春芳
饶萍
欧珍贵
LUO Yahong;YANG Long;LUO Chunfang;RAO Ping;OU Zhengui(Research Institute of Subtropical Crops,Guizhou Academy of Agricultural Sciences,Xingyi,Guizhou 562400,China)
出处
《热带农业科学》
2022年第1期22-26,共5页
Chinese Journal of Tropical Agriculture
基金
贵州省科技计划项目“饲用木薯品种鉴选及饲用技术研究”(No.黔科合支撑[2019]2358号)
“两江一河”热带(亚热带)精品果树产业发展(No.黔农科院精品水果产业专项[2020]01号)
滇桂黔石漠化地区特色作物产业发展关键技术集成示范项目(No.SMH2019-2021)。
关键词
间作方式
种植密度
木薯
产量及效益
Intercropping method
planting density
cassava
yield and benefit
