论文部分内容阅读
于1998～2000年设置了天然降雨下渗与径流模拟试验,以比较本田集雨、全覆盖集雨、旱井集雨等集雨方式的效果。试验表明,本田集雨仅能收集降雨量的2.3%～5.9%,所以只能作为集雨的辅助措施,而场院、道路、山坡或全覆盖条件下能收集降雨量的50%以上。利用地头旱井收集径流雨水,在小麦和玉米生育期使用现代化滴喷灌技术补灌,不仅可以显著增加作物产量,而且可以提高复种指数。据1998年试验,小麦、玉米每666.7m2总产达733.3kg,比对照增产38.2%;1999年试验,小麦、玉米总产达440.7kg;2000年,总产432.7kg,增产67.5%。
In 1998 ~ 2000 set up a natural rainfall infiltration and runoff simulation test to compare Honda rain collection, full coverage of rain, rainwater catchment and rainwater harvesting effect. Tests show that Honda catchment can only collect 2.3% -5.9% of the rainfall, so it can only serve as a supplementary measure for rainwater harvesting, while more than 50% of the rainfall can be collected under yard, road, hillside or full coverage. The use of drainage wells to collect runoff rainwater and use modern drip irrigation during the growth of wheat and maize can not only increase crop yield significantly but also increase the multiple cropping index. According to the 1998 test, the total output of 666.7m2 of wheat and corn reached 733.3kg, an increase of 38.2% over the control. In 1999, the total output of wheat and corn reached 440.7kg. In 2000, the total output was 432.7kg, an increase of 67.5%.