土面处理对魔芋生长及产量的影响

Effects of Different Mulching Patterns on Growth and Yield of Amorphophallus konjac

为了探明魔芋无害化高产栽培技术,以本地花魔芋为试材,采取随机区组试验,研究土面覆草及其过火焚烧对魔芋植株生长及球茎产量的影响。结果表明:火烧土面覆草后再覆草处理魔芋的生长量极显著高于其他各处理,其球茎产量达2 138.26kg/667m^2,较仅火烧覆草(1 461.99kg/667m^2)和仅覆草(1 449.39kg/667m^2)分别增产46.26%和47.53%,比不覆草(835.01kg/667m^2)增产156.08%,差异达极显著;且仅火烧覆草和仅覆草的比不覆草的分别增产75.07%和73.38%,差异达极显著。魔芋栽培土面覆草,火烧土面覆草后再覆草可减少农药用量,有利于生产优质和绿色生态的魔芋产品,是魔芋无公害栽培的有效增产措施,可在魔芋早播以及山草资源丰富的地区推广应用。

The effects of four mulching patterns （soil surface covered with grass, soil surface covered with burned grass, soil surface coverd with burned grass ＋ grass and no mulching） on growth and bulb yield of A. konjac were studied by the randomized block test to discuss the pollution-free high-yield cultivation technique of A. konjac. Results： The growth of A. konjac under the soil surface covered with burned grass ＋ grass pattern is higher than other treatments very significantly and the bulb yield （2 138.26 kg/667m^2） is 46. 26%, 47. 53% and 156. 08% higher than the soil surface covered with burned grass treatment, soil surface covered with grass treatment and no mulching treatment respectively. The bulb yield of the soil surface covered with burned grass treatment and soil surface covered with grass treatment is 75. 07% and 73. 38% higher than no mulching treatment separately. The patterns of soil surface covered with grass and soil surface covered with burned grass ＋ grass in A. konjac cultivation can reduce pesticide application level for controlling diseases and weeds, which is beneficial to produce high- quality and green ecological A. konjac products. The soil surface covered with grass and soil surface covered with burned grass＋ grass patterns with a significant effect of yield increase in A. konjac pollutionfree cultivation should be popularized and applied in areas with early sowing condition and abundant grass resources.