中文摘要：

为了研究水稻联合收割机收获紫云英种子的应用效果，对比分析了机械收种和人工收种两种方法的种子产量、劳动效率、收割成本和经济效益。结果表明，与传统人工收种方法相比，机械收种降低了紫云英种子的损失率，比人工收种产量增加了92.7 kg/hm2，增幅为16.3%；提高了劳动效率，一台收割机一天收获的紫云英种子数量相当于18～20人一天的收种量；节约了紫云英留种生产的劳动成本，提高了紫云英种子生产的经济效益，采用机械收获紫云英种子比人工收种直接降低劳动成本2175～3000元/hm2，增加经济收入3307～4099元/hm2。该技术的推广应用对缓解南方稻区紫云英种子的短缺问题以及加快紫云英绿肥作物的发展具有重要的作用。

英文摘要：

During the test, the seed yield, Iabor efficiency, harvesting costs and eco-nomic benefits were compared and analyzed between mechanical harvesting tech-noIogy and traditional artificial harvesting technoIogy of Chinese miIk vetch seeds to studied the mechanical harvesting technoIogy and appIication effects. The resuIts showed that mechanical harvesting technoIogy increased the yield of 92.7 kg/hm2, reducing the seeds Ioss. It improved the Iabor efficiency and reduced the harvesting cost. For exampIe, a rice combine harvester was the equal of 18-20 person in the harvest quantity in one day, which directIy reduced the Iabor cost of 2 175-3 000 yuan/hm2 and increased the economic income of 3 307-4 099 yuan/hm2. So it wiI pIay an important roIe in soIving the shortage of Chinese miIk vetch seeds and ac-ceIerating the deveIopment of Chinese miIk vetch green manure crop in south China rice region.