摘要
为研究不同灌溉条件下施肥模式对土壤养分的影响,采用裂区试验设计,灌溉为主区,分别为膜下滴灌和大水漫灌;施肥为副区,分别为不施肥、常规施肥、常规施肥+生物肥、常规施肥+氮肥增效剂,研究土壤有机质、全氮、硝态氮、铵态氮、速效磷和速效钾含量的变化特征。结果表明,膜下滴灌处理的土壤有机质、铵态氮、硝态氮、速效磷和速效钾含量均高于大水漫灌,同一灌水条件下的常规施肥+生物有机肥处理的土壤有机质、全氮、速效磷和速效钾含量均最高,说明在职中玉米生产过程中,可采用膜下滴灌和常规施肥+生物肥的施肥模式相结合,以提高土壤养分含量。
In order to study the effects of different fertilization modes on soil nutrients under different irrigation conditions,a splitplot experiment design was adopted.The main irrigation areas were drip irrigation under film and flood irrigation.The changes of soil organic matter,total nitrogen,nitrate nitrogen,ammonium nitrogen,available phosphorus and available potassium contents in soil were studied by using no fertilizer,conventional fertilizer,conventional fertilizer+biological fertilizer,and conventional fertilizer+nitrogen synergist.The results showed that the contents of soil organic matter,ammonium nitrogen,nitrate nitrogen,available phosphorus and available potassium under drip irrigation were higher than those under flood irrigation,and the contents of soil organic matter,total nitrogen,available phosphorus and available potassium under conventional fertilization and bio-organic fertilizer under the same irrigation condition were the highest,indicating that during in-service maize production,the contents of soil organic matter,total nitrogen,available phosphorus and available potassium were the highest.A combination of submembrane drip irrigation and conventional fertilization+biological fertilizer can be used to increase soil nutrient content.
作者
张杰
Zhang Jie(Yidequ Canal Water Management Institute of Hongshuihe River Management Office of Minle County,Minle 734500,Gansu,China)
出处
《农业技术与装备》
2023年第12期21-23,26,共4页
Agricultural Technology & Equipment
关键词
灌溉
施肥
土壤
养分
irrigation
fertilize
soil
nutrient
