Based on the characters of newly-built terraces and newly-leveled bottomland i n loess Hilly region are barren soil, low microbes activity, hardened soil and poor physical properties, some integrated techniques were applied such as subso il in autumn, increasing the application of organic compound-fertilizer and fil m plating in the furrows. The results showed that to the newly-built fields the se techniques could enhance the multiplication of the microbe population and the ir activities, promote the substance transforming into energy, markedly improve the physical and chemical properties of the soil, and boost the formation of the micro-structure of soil, and accelerate the ripeness of immature soil. The qu antity of the microbes and the content of N, P, K in the tested fields nearly re ached to those in the middle-fertile land of that area. Which promoted the crop growth and development, and increased 40% crop yield compared with that in conv entional fertility betterment fields.