1.选地整地选择地势平坦,土层深厚,通透性、保肥水性好的中上等地。不适宜在沙土,土层薄,保水肥性差的旱地。对选好的地块,深耕细耙。最好在秋季耕翻,以利冻垡或晒垡,达到疏松土壤和积蓄雪水的目的,或在春季顶凌时进行。深耕要深浅适中,均匀一致,扣垡严密,不漏耕,一般在20～25厘米。耕后及时耙压,秋翻地应在翌年春土壤化冻5厘米深时耙。耕耙时拣净根茬、石块,打碎坷垃。使土层松紧适度,墒情良好。 2.增施粪肥与做畦 1. Selection of land preparation Select flat, deep soil, permeability, good fertilizer and water good middle ground. Not suitable in the sand, thin soil, poor water retention of dry land. Selected plots, cultivating fine rake. It is best to plow in the fall so as to facilitate frostbite or drying, to loosen the soil and to accumulate snow water, or at the peak of the spring. Deep plowing to moderate depth, uniform, buckle tight, not tilling, usually in the 20 to 25 cm. Harrowing pressure in time after plowing, autumn turning ground soil thawing 5 cm deep in the following spring rake. When harvesting rake pick net stubble, stones, broken builders. So that the soil is moderately elastic, good moisture content. 2. Increase manure and do 畦