【摘要】 选择薯块食味佳并具有保健功能的渝紫263甘薯,采用二因素裂区试验设计,以确定品种适宜收获期及种蔓扦插的有效部位。试验结果表明,渝紫263甘薯适宜收获期为123 d,667 m2产量1 091 kg,比109 d收获的增产24.63%,且109 d后平均每天每667 m2产量增加达17.8 kg,产量增加主要是因为大薯产量极显著增加以及迷你薯产量增加。扣除种蔓成本后,123 d收获的甘薯经济收益为5 802元,比109 d收获的增效22.0%,109 d后每延长1 d生育期,每667 m2直接收益增加达74.6元。不同种蔓扦插部位比较,带心部位与无心部位每667 m2产量与净收益差异均不大。更多还原

【Abstract】 In this paper,we took sweet potato cultivar Yuzi 263 with good taste and health-care function as material to make sure its suitable harvest period and vine cutting position by using two-factor split plot design.The results showed that the suitable harvest period was 123 days,and the yield of 123 days was 1 091 kg/667 m2,which was 24.63% higher than that of 109 days.Harvesting after planting of 109 days,the yield increased 17.8 kg/667 m2 every day,which was mainly contributed by significant yield increase of big potatoes and then by yield increase of mini potatoes.After deducting the vine cost,the economic income of harvesting at 123 days was 5 802 yuan/667 m2,which was 22% higher than that of 109 days,and as the growth period prolonged a day after 109 days,the income increased 74.6 yuan/667 m2.There was no significant difference for both yield and net income of different vine cutting positions.更多还原