This creation is that a kind of vertical drop formula crop of related modified form of what encourages nettle,It is that the known vertical drop formula crop of improvement encourages two support rods of nettle and the construction of a rolling bar structure,In addition to still having known vertical drop formula crop and encouraging the original function of nettle,Upgrowth situation that can also be different in response to the crops of individual tendril classes,The fixed pin of its corresponding rolling bar handle, which is loosened, makes its no longer fixed what rolling bar Hou,It rotates the specific rolling bar handle and adjusts corresponding crop and encourage the length that element is placed to the ground,And then the height of the crops of the tendril class is adjusted,This creation and adjustable rolling bar height with the optimum growh height of the crops in response to all kinds of tendril classes,Also it can adjust the position that the rolling bar is moved along Hou before the cross bar of two support rods,And increase the growing space of the crops of tendril class.本創作係有關於一種改良型垂降式作物助長網繩，其係改良習知垂降式作物助長網繩之二支撐桿及一滾桿結構之構造，除仍具備習知垂降式作物助長網繩之原有功能外，也可因應個別藤蔓類之農作物不同的生長狀況，將其相應滾桿把手之固定銷鬆脫使其不再固定於滾桿後，轉動該特定滾桿把手而調整相應作物助長元件向地面放置之長度，進而調整該藤蔓類之農作物的高度，本創作並可調整滾桿高度以因應各類藤蔓類之農作物的最佳生長高度，亦可調整該滾桿沿著二支撐桿之橫桿前後移動之位置，而增加藤蔓類之農作物的生長空間。
