宁南山区旱地农业增产技术体系的研究

Study on the technical system for raising the production of dryland farming in the southern Ningxia hilIy regions

本文以实验结果为依据,证明宁南黄土丘陵半干旱地区,以调整农田结构为基础,培肥土壤为中心,输入化肥为动力,建立农牧结合、粮豆经饲轮作等配套技术体系,是稳定提高土地生产力,促进农田生态系统向良性循环转化的根本措施,也是宁南山区脱贫致富的有效途径。

In order to study the aceess of inereasing the production of dryla- nd farming,three experiment spots were set up successively in the Southern Ningxia hilly regions in 1983-1988.Now anticipated results were obtained. The area of grassland acqujred after returning farmland to plant grass inc- reased twice,while the total grain yields of three experiment spots—Dong ZiJian,ShangHuang,and Caowa villages were raised for 97%,90%and 47% respectively.In the meantime,the quantities of raising animals were en- hanced by 55%,68 and 57%.These resuls have demonstrated that complying with the synchronized decision of adjusting the sttucture of farmland and raising the land produtivity,reforming the cropping system of farmland, fertilizing the soil,inputing the chemical manure as the impulse.setting up combined technical system such as the fusion of farming and animal husbandry and the rotation of grain crops,pulses,industrial crops and for- age crops,are the radical approaches to steady promoting of land producti- vity,and accelerating the sound circulation of farmland ecologocal system as well as the efficient ways of changing the farmers'life from the pov- erty to affluence in the Southern Ningxia hilly regions.