甘肃天水專区有49.2％的农耕地屬于黃河流域渭河水系的黃土丘陵沟壑区、目前这类地区的轮作制度大多为二年三熟,即冬小麦+荞麦→筱麦或糜子。天水地委在五年規划(草案)中提出将現在15％的复种指数在五年內提高到40％,为了实現这一規划,势必扩大冬小麦+荞麦(槎田)→筱麦或糜子的轮作制,或冬小 49.2% of the farmland in Tianshui area of ​​Gansu belongs to the loess hill and gully area of ​​the Weihe River system in the Yellow River basin. At present, most of the crop rotation systems in this region are three-year-old crops, namely winter wheat + buckwheat → young wheat or broomcorn millet. In its five-year plan (draft), the Tianshui prefectural committee proposed raising the current 15% MIX to 40% within five years. In order to achieve this goal, it is bound to expand the winter wheat + buckwheat (槎 田) → 麦 麦 or 子Rotary system, or winter small