半干旱黄土高原集水高效旱地农业的发展

黄土高原半干旱区传统水土保持型农业的发展已有数十年的历程，已基本趋于成熟，但对水肥热的菌控能力很低，难于发展高附加值作物生产，因此生产效益低下，难以走上良性怅的轨道，不能解决目前遇到的实际问题，通过近几年来的探索，认为，在不上保持农业的基础上，进一步发展雨养农业最有效的途径不是人工富集天然降水，将富集的降水用于农业生产，可以大大大提高降水的利用效率和生产效益，这就是集水农业，是今后半干旱区雨养农业

THE RAINWATER HARVESTING TECHNOLOGY APPROACH FOR DRYLAND AGRICULTURE IN SEMI ARID LOESS PLATEAU OF CHINA

The traditional water soil conserving agriculture has been developed for several decades.However,its regulative roles in water,fertility and temperature,were very limited.We think that the practicable approach is to harvest and stored rainwater artificially,and to supply limited irrigation at the key stage in crop development.This paper reviewed the research progress in rainwater harvesting technology applied in crop production.It is suggested that this technology will become one of the major directions of dryland agriculture in Northwest China.