芋头不培土覆膜栽培法研究

STUDIES ON UNMOLDING PLASTIC-SHEET—COVERED CULTIVATION OF TARO

对芋头的栽培技术进行了试验研究。生产上广为应用的在生长盛期培土抑制儿芽儿叶的传统栽培法影响植株生长,而且培土时易造成根系损伤。儿芽儿叶与主茎叶片具有同样光合性能,不培土使儿芽儿叶充分发展.扩大地上部绿叶面积,可促进地下部根系生长及子芋,孙芋大量形成。依此采用以不培土、覆盖地膜为主要措施的新的栽培法,利于充分发挥芋头的增产性能,较传统栽培法增产92.5%～98.0%。适当增加覆土深度可克服新法“青头郎”较多的弊端。

Studies on the cuitural techniques of taro,were reported in this pa-per.The results showed that the classical method wide -used in taroproduction,in which molding at rapidly growing stage was used to suptess daughter-buds and daughter leaves,affected plant growth and read-ily caused damages to the root system of taro plants.The daughter-buds and daughter-leaves had the same photosynthetic character as theleaves of main stems of taro plants.The unmolidng plastic-sheet-covered cultivation technique made the daughter-buds and daughter-leaves fully develope,increased green leaf area above the ground andpromoted growth of the root system under the groud and formation ofdaughter and grand-daughter-taro greatly.The new cultural method weused was benefidal to enough expression of the high production featureof taro and got the increase amount of 92.5%～98.0% as compared withthe classical method.Increasing the molding depth properly could over-come the disadvantage of the new method,in which more green headtaro were produced.