Effects of intercropping on growth and yield of rape and Chinese milk vetch
For sustainable land use and higher revenue on both green manure and oil seed rape (Brassica napus L.),a practical rape/Chinese milk vetch (Astragalus sinicus L.) intercropping system was to be established without affecting yields of rapeseed.Effects of the intercropping (planting two lines of rape with one line of Chinese milk vetch within one meter width) under different planting densities (from 200 000 to 400 000 plants per hectare) of rapeseed were investigated on rape growth and yield in field.Results showed that the accumulation of nitrogen,phosphorus,potassium and carbon in rape were close to mono-cropping rape (MR,at the density of 300 000 plants per hectare) or higher.The plant height,root length,root crown diameter,weight per plant,and yield were similar to MR or significantly higher.About 3 592 to 5 724 kg per hectare of green manures were harvested when rape yield maintained at the MR level.Thus,the system showed clear advantage of land resources with LER (land equivalent ratio) more than 1.
RapeChinese milk vetchIntercroppingGrowth and developmentLand equivalent ratioYield
国家科技期刊平台
NSTL
万方数据
维普
