上黄试验区退耕种草与旱作粮油增产技术试验

本试验系上黄试验区农林牧优化生态经济结构试验的一个组成部分。试验中以采用增施化肥为突破口及农田结构调整等综合技术，使试验区粮油在短期内达到了自给有余，农田生态开始走向了良性循环。

Changing Cultivated Land to Grass Land at Shanghuang Village and Experiment of Raising the Yield of Grain and Oil Crops on Dry Land

This experiment is a part of orientate experiment of optimum farming, forestry and animal-husbandry structure on both ecology and economy at loess hilly area. To raise chemical fertilizer as the main method in this experiment, meanwhile to adjust the planting composition, all these techniques enable the grain and oil-crops yield to be morn than self-sufficient, and enable land ecology to get into fine circle at Shanghuang experimental feild.