不同扦插密度与施肥模式对马铃薯微型薯产量的影响

Effect of Different Cutting Density and Fertilizing Model on Yield of Mini-Potato

以中薯2号的脱毒试管苗为试材,研究不同扦插密度与施肥模式对成都地区马铃薯微型薯产量的影响。结果表明:扦插密度为78株/盘(624株/m2),其产量最高,平均每盘合格薯为77.2个,平均每盘薯重155.5g;在生根第1、2周喷施烟草复合肥70g+尿素30 g+水15 kg,在第3、第4周喷施烟草复合肥100 g+水15 kg,在第5、6周喷施烟草复合肥60 g+磷酸二氢钾40 g+水15 kg,采用该施肥处理产量最高,其单薯重为1.93 g,每盘产薯重178.4 g。

Using potato virus-free seedling of ＇Zhongshu No.2＇ as the experimental material,the effect of different cutting density and fertilizing model on yield of the mini-Potato in Chengdu were studied.The results indicated that the best cutting density was 624 plants/m2 and the best fertilizing model was as follows： spraying fertilizer in rootage duration with ＇tobacco compound fertilizer 70 g＋carbamide 30 g＋water 15 kg＇ in the first week and the second week,＇tobacco compound fertilizer 100 g＋water 15 kg＇ in the third week and the forth week,＇tobacco compound fertilizer 60 g＋potassium dihydrogen phosphate 40 g＋ water 15 kg＇ in the fifth week and the sixth week.