魔芋北移引种试验研究

Introduction Trial with Amorphophallus rivieri Beyond Its NativeNorthern Range

进行了12年的魔芋北移引种试验．结果表明：魔芋引种在陕西渭河流域，能够完成生育周期，产量和品质与原产地无显著差异；廉于引种在陕西榆林和辽宁盖县，能够生长，品质与原产地相近，产量略低于原产地。在引种区栽培魔芋的最佳参数是：渭河流域播种期4月下旬，陕西榆林毛乌素沙区和辽宁盖县播种期4月中旬；球茎种重35O～500g种植，种植密度50cm×50cm，荫蔽度50％～60％；采收期：渭河流域10月下旬，榆林毛乌素沙区和辽宁盖县10月上中旬。还进行了魔芋分芽繁殖、生长动态规律、产量与柄茎的相关性、立体栽培等试验研究。

The introduction trial with Amorphophallus rivieribeyond its native northernrange was initiated 12 years ago. Results so far have indicated that, when it is grown in the WeiRiver Valley in Shaanxi, the plant can complete its life cycle normally and produce undergroundball-like stem, the principal organ for utilization, with a yield and quality almost the same asthose in the native habitat. When it is introduced to Yulin,Shaanxi, and Gaixian, Liaoning, theplant can also grow normally and yield product with a quality approximating that in the nativehabitat but a slightly lower production is attained. The optima1 calendar of growing this crop isfound to be: seeding in late April and harvesting in late October in Wei River Valley while seed-ing in mid April and harvesting in early to mid October in Maowusu Des ert Area of Yulin,Shaanxi and Gaixian, Liaoning. The suitable size of the stem to be planted ranges from 350 g to500 g; the best planting density is 50 cm by 50 cm; and the 50% to 60% shading is desirable.