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棉花施追肥,一般用锄掘穴,易伤棉根,而且费工。穴施器轻便容易掌握,可使肥料适当深施。一、构造构造简单,如图,插头亦可作扁长形,插头大小长短根据不同的土质可以增减。杆的长短根据使用者的高矮可以伸缩。把手不宜太粗,拿在手里方便舒适为宜。成本便宜,铁插头,1个需6,100元(1斤2两重的),木料需3,400元(均包工包料),共计
Topdressing cotton, the general hoe burrows, easy to hurt cotton roots, but also labor. The hole applicator is light and easy to grasp, allowing proper application of fertilizer. First, the structure is simple, as shown, the plug can also be used for a long, plugs size according to different soil can be increased or decreased. The length of the rod can be based on the height of the user can retractable. Handle should not be too thick, convenient and comfortable in your hand is appropriate. Cost is cheap, iron plug, a required 6,100 yuan (1 kg 2 double), wood needs 3,400 yuan (both Gong Gong package material), total