求翻译：整地施肥，应选择土壤肥沃，土层深厚，疏松，透气性好，微酸性的沙壤土，播前要进行灭茬、深耕，耕深应达20厘米是什么意思？

Preparation fertilization, should be selected fertile soil, deep soil, loose, breathable, slightly acidic sandy loam, the stubble before sowing, deep plowing, tillage depth should be 20 cm

1996.40 fertile soil fertilization, which should be chosen, and the soil layer, osteoporosis, deep breathes well, slightly acidic sandy loam before broadcast, to fight this, publishers should be up to 20 centimetres deep forests and grasslands.

Entire applies fertilizer, should choose the soil to be fertile, the soil layer is deep, loose, the permeability is good front, the slight acidity sandy soil, broadcasts must carry on eliminates stubble, ploughs deeply, ploughs deeply should amount to 20 centimeters

Fertilization of site preparation, you should choose the fertile soil, soil layer deep, loose, breathable and good, slightly acidic sandy loam soil, before sowing for stubble, and deep, tilling depth should be up to 20 cm

Preparation fertilization, should be selected fertile soil, deep soil, loose, breathable, slightly acidic sandy loam, the stubble before sowing, deep plowing, tillage depth should be 20 cm