覆盖不同作物对魔芋生长和产量的影响

Effects of Covering Different Crops on Konjac Growth and Yield

2012-2013年,在云南省富源县冬季开展大田试验,研究不同覆盖作物对魔芋的生长发育、发病率、产量及经济效益的影响。试验结果表明,覆盖不同的作物会影响魔芋的出苗时间和倒苗时间,不覆盖的出苗最早,覆盖苕子和油菜的出苗最晚,倒苗时间则刚好相反;覆盖苕子、油菜、豌豆对魔芋软腐病的防治有一定作用;覆盖油菜和大蒜的魔芋产量比对照高,其余处理则比对照低;覆盖大蒜的产值最高,1 hm2达141 264元,比对照(不覆盖)的115 758元高25 506元,其次是覆盖油菜,1 hm2达135 665元,比对照(不覆盖)高19 907元,其余都比对照低。

We studied the effects of covering different crops on the growth and development, disease incidence, yield and economic benefit of konjac in winter from 2012 to 2013 in Fuyuan county of Yunnan province. The results showed that,different covering crops affected emergence time of konjac, and seedlings germinated earliest of the treatment without covering crop, while seedlings germinated latest of the two treatments covering with smooth vetch and rape respectively.Meanwhile, covering with smooth vetch, rape and pea could control and prevent soft rot of konjac. Crops covering affected konjac yield, and the treatments covered with rape and garlic respectively had higher yield than the control treatment,while the other treatments had lower yield than the control treatment. The two treatments covered with garlic and rape had higher economic benefit of 141 264 and 135 665 Yuan/hm^2, which were 25 506 and 19 907 Yuan/hm^2 higher than that of the control treatment respectively, while the yields of the other treatments were lower than that of the control treatment.