山西省旱作节水农业技术研究

以小麦、玉米为参试作物,将地膜覆盖与节水技术有机结合,并结合当地自然生态条件,在分析改进的基础上,组建具有山西特色的旱作节水农业技术并进行示范推广。研究结果表明:(1)小麦、玉米作为山西旱区的主要作物,采用节水技术可明显提高产量。(2)地膜玉米不同生育时期、不同集雨贮水有限补充灌溉具有明显的产量和水分利用效果。(3)山西省降水主要集中在夏秋两季,6~9月的降水占全年降水总量的60%以上。这种气候条件在田间坡地易产生径流,适宜发展集雨农业,也是从根本上解决旱地水源的主要途径。

Study on Dryland Farming Technology in Shanxi

With wheat and corn as experimental crops and technology of film mulching and water efficiency were combined with local ecological conditions,typical Shanxi water efficiency farming in dryland was studied in present paper.The results showed as the following:(1)Water efficiency technology could considerably improve yield of wheat and corn the leading crops for dryland in Shanxi;(2)Certain supplemental irrigation with various rainwater harvesting or water saving technology during all growth stages could obviously improve yield and water utilization results;(3)The rain precipitation in Shanxi was concentrated in summer and autum;The rainfall from June to September accounts for more than 60% for the whole year,so such climate condition is liable to produce runoff along slopes in the fields.It is suitable to popularize rainwater harvesting farming and it is the only way out for dryland water shortage problem in Shanxi.