摘要
通过田间试验探讨了滴灌施肥、喷水带灌溉加人工撒肥、常规灌溉施肥3种水肥管理方式对香蕉生长及水肥利用的影响,并对3种灌溉施肥方式下的经济效益进行比较。结果表明:与常规灌溉施肥及喷水带灌溉加人工施肥方式相比,通过滴灌施肥系统进行灌溉和施肥能显著促进香蕉生长发育,增加香蕉各部分生物干重,增加一级根数量,促进香蕉集中抽蕾,增大香蕉果指长、果指围,香蕉产量增加值达到29.37%;在滴灌施肥下有利于氮、钾等养分的平衡供应,提高养分的利用效率;滴灌施肥和喷水带灌溉加人工撒肥两种灌溉施肥方式均有利于节省肥料、人工等生产成本,而滴灌施肥条件下所取得的经济效益更显著。研究结果将为滴灌施肥技术在香蕉生产上的应用提供理论依据。
A field experiment is conducted to investigate the effects of drip fertigation（DF）, sprinkling tape irrigation with fertilizer broadcasting（SI） and conventional irrigation with fertilization（CI） on banana growth, water and fertilization utilization efficiency and economic benefit. The results obtained are as follows., as compared with SI and CI, DF obviously increases the dry biomass, finger length, finger girth and first lateral roots number of banana, as a result that the yield of banana increases by 29. 37%. DF shows some special advantages on balance supply of nitrogen, potassium and other nutrients, so as to increase utilization efficiency of fertil izers. DF and SI are advantageous to saves the cost of fertilizer and labor, and there are more economic benefits in DF. The study provided a theoretical basis for the use of drip fertigation on cultivation of banana.
出处
《节水灌溉》
北大核心
2010年第8期45-48,共4页
Water Saving Irrigation
基金
农业部公益行业项目(200803030)
广东省自然科学基金项目(9151065003000010)
华南农业大学资源环境学院院长基金项目联合资助
关键词
滴灌
喷水带灌溉
香蕉
水肥一体化
经济效益
drip irrigation
sprinkling tape irrigation
banana
fertigation
economic benefit
