目前长山药机器打沟栽培比较省工、省力、高产,是当前比较成熟的种植技术,一般地块亩产2000—2500公斤,栽培技术要点如下:一、选择适宜种植山药地块选择地势高燥,向阳,排水良好,地下水位低,土壤质地沙壤或轻壤,土层深厚,土壤pH值为6—8,三年以内没有种过山药的地块。二、选种和种子处理1、选种根据商品销售需要,选择品质优良、高产的品种,如日本白山药。一般播前20—30天挑选块 At present, the cultivation of long yam medicine machine is more labor-saving planting, labor-saving, high-yielding, is the current relatively mature planting techniques, the average mass per mu 2000-2500 kg, cultivation techniques are as follows: First, choose suitable for planting yam plots high terrain , Sunny, good drainage, low groundwater level, soil texture sandy soil or light soil, deep soil, soil pH value of 6-8, within three years have not planted the land of yam. Second, the selection and seed treatment 1, selection According to the needs of commodity sales, select high quality, high yield varieties, such as Japanese white yam. 20-30 days before the general broadcast selection block