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1.深翻改土。深翻方法用壕沟法和种植穴扩大法。(1)壕沟法:在梯田内侧或行间,挖深、宽各1米的长条壕沟,将表土与底土分别放于上下方,然后将草皮、绿肥、堆厩肥等有机肥料与土壤分6层埋入,先放表土,后放底土,粗肥压入底层,精肥施于上层及附近处。每100斤绿肥撒熟石灰1.5斤,填土
1. Deep change soil. Deep plowing method using trench method and planting hole expansion method. (1) Trench Method: Long trenches 1 m deep and 1 meter wide shall be dug inside and between terraces, and the top soil and subsoil shall be placed on the top and bottom, respectively, and the organic fertilizer such as turf, green manure and pile manure shall be classified into 6 Layer buried, first put the top soil, then subsoil, crude fat into the bottom, refined fertilizer applied to the upper and nearby office. Per 100 kg of green manure sprinkled lime 1.5 kg, filling