漓江上游丘陵山地柑桔滴灌施肥种植技术研究及应用

Research and Application of Fertigation Technique in Citrus Production in Hilly Region of Upstream of Lijiang River

滴灌施肥技术是现代农业的高效生产技术,具有显著的优越性。针对漓江上游丘陵山地柑桔种植过程中存在的水资源浪费、肥料过度施用引起面源污染、生产技术落后的问题,在柑桔种植中引入滴灌施肥技术并根据生产实际,对滴灌施肥系统及其过滤装置进行了技术创新。2014年的应用结果表明,通过技术改进建立的滴灌施肥系统,在更实用和易于操作的前提下,降低了生产成本。与传统灌溉施肥相比,滴灌施肥技术的应用可减少肥料投入45.6%,提高柑桔产量10.2%,增加纯收入35 680元/hm2,综合效益显著提升,值得在漓江上游柑桔生产中大力推广。

Fertigation is a high efficient technology for agricultural production and has high application around the world. Lijiang River is famous for its beautiful scene, but now faces more challenges for the degraded ecology, especially water pollution. Citrus production is an important income source for farmers in agricultural production in Guilin, but traditional production methods, including excessive fertilizer and water use, may lead to waste of water and fertilizer and induce water pollution. According to this situation, the technique of fertigation is introduced into citrus production in hilly region of upstream of Lijiang River. Meanwhile, some parts of the fertigation system were improved. During one year experiment in 2014, the results showed that the technique could be more practical and workable by the use of the improved fertigation system, which could reduce the input of citrus production and fertilizer application up to 45.6, enhance citrus yield by 10.2%; and net income by ;35 680 per htn2.