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去年,我们搞了甘薯“掐尖繁枝”栽培125亩,一般亩产鲜薯1万斤,最高亩产17,827斤。这种方法,土层暄厚,保水保肥,通风透光,温度平衡,山区和平地均可采用。先将熟土翻耕作成平顶圆堆,每亩约作1,000个,堆底直径2.7尺,堆面直径1.5尺,堆高1.2尺。每堆栽薯苗4株(苗长8—9寸),按“十”字形平放于堆面,盖细土1.5寸,苗在堆内长6寸(见图1)。如实行垅栽,可平顶起垅,垅长6尺,垅底宽1.2尺,垅面宽8寸,垅高6寸,垅距为通气沟,沟面宽6寸,沟底宽2寸。垅端留人行道,其宽度,一端以放下粪桶,另一端能站人为宜,成宽窄人行道交替(见
Last year, we engaged in sweet potato “pinch sharp sticks” cultivation of 125 acres, the general mu produce 1 kg of fresh potatoes, the highest yield 17,827 pounds. This method, the soil thick greeting, water and fertilizer, ventilation and light, temperature balance, mountainous areas can be used. First mature tillable land into flat-topped circular pile, about 1,000 acres per mu, bottom diameter of 2.7 feet, pile diameter of 1.5 feet, 1.2 meters high pile. Each batch of potato seedlings planted 4 (8-9 inches in length), according to the “ten” shaped flat lay on the surface, cover fine soil 1.5 inches, seedlings grow 6 inches long in the pile (see Figure 1). If the plankton planting, can be flat-topped 垅, 垅 long 6 feet, 垅 bottom width of 1.2 feet, 垅 wide 8-inch, 垅 high 6-inch, 垅 distance for ventilation groove, groove width 6 inches, .留 end sidewalks, its width, at one end to drop the manure bucket, the other end of the station can be appropriate to become narrow sidewalks alternating (see