肥料对魔芋产量和病害影响的试验研究

陇川县1997年引种种植白魔芋33.3hm2,病害严重发生,收获量仅2.56t/hm2。1999年进行了白魔芋种植的肥料试验,结果表明,以足量腐熟农家肥为底肥的施肥措施能显著降低田间发病率和提高球茎产量,其中施腐熟农家肥1 000kg、普钙33.4kg、尿素5kg、磷酸二氢钾0.5kg/667m2作底肥的H处理,与不施肥对照相比可降低发病率50%以上,提高产量420%以上,推算产量可达12t/hm2。

The Effect of Fertilizers on Yield and Disease of Amorphophallus albus

33.3hm2 of Amorphophallus albus had been introduced to Longchuan since 1997,with yield of 2.56t per hm2 due to disease.Experiment of fertilizers was carried out in 1999.The results showed that adequate fermented manure as base fertilizer could inhibit the disease significantly and increase the yield of bulbs.Of the treatments,compared with that of control,it could decrease the incidence to 50% and increase yield up to 420% with 12t per hm2 under treatment H(fermented manure 1 000kg,superphosphate 33.4kg,urea 5kg and KH-2PO-4 0.5kg/667m2).