坡地修梯田是黄土丘三区一项解决坡面水土流失带有根本性的措施,但产量没有显著提高,对此我们进行了研究,发现传统的耕作方法在2—3年内难以收到增产的效益,“丰产沟”集约耕作法有很大的增产效果.下面是我们的研究结果。一、修成了梯田后为什么产量不高渭河中上游广大的黄土丘三区,耕垦指数高,地 Sloping terraced fields are a fundamental measure to solve the soil and water loss on the slope surface in the three loess hilly areas, but the yield did not increase significantly. We conducted a study to this and found that it is difficult for the traditional farming methods to receive stimulation within 2-3 years Benefit, “Feng Shougou” intensive farming method has a great yield. The following is our research results. First, after repairing the terraced fields, the yield is not high. The vast loess hilly area in the middle and upper reaches of the Weihe River has a high land reclamation index and a high