打孔和管道栽培怀山药的产量和经济效应

Effect of cultivation by hole and by conduit on the economical benefit of Chinese jam

打孔、管道和打眼管道栽培怀山药和常规栽培相比 ,分别增产 88% ,4 0 %和 6 0 % ;商品块茎分别增加 10 3% ,75 %和10 0 % .收获时劳力投入量分别减少 10 0 % ,5 0 0 %和 5 0 0 % 。

The results showed that cultivation by hole,by conduit and by conduit around small hole produced 88.89%, 40.00% and 60.00% increase in Chinese jam yield and 103.10%,75.00% and 100.00% increase at goods compared with the common cultivation. Meanwhile, there was 100.00%,500.00% and 500.00% less work force than that of common cultivation. Therefore, these were effective ways of standard planting for Chinese jam.