摘要
对测土配方施肥项目5909个土壤样品测试分析,天等县有效锌含量属于中低水平(<2.0mg/kg)以下的占总耕地面积60.4%。其中水稻缺锌面积占水田面积62.2%。为探索在缺锌土壤上,施用锌微肥对水稻产量的影响,进行了本试验。结果表明,增施锌肥,平均产量7578.1kg/hm2,增产511.1kg/hm2,增效973.67元/hm2,其中又以在基肥中增施22.5kg/hm2硫酸锌的效果最佳,可获得最佳效益(13023.15元/hm2)。
To test 5909 soil samples in a soil-tested and formula fertilization project, it is known that the effective zinc in Tiandeng under mlddle-and-lower level （〈2.0 mg/kg）accounts for 50.4% of total farmlands. Among them, lack-zinc paddy field area accounts for 62.2% of the total paddy field. In order to explore the impact of zinc fertilizer application on rice yield in lack-zinc soil, this experiment was conducted. The results show that increasing application of zinc fertilizer, the average yield will be 7578. l kg/hm^2 with yield increase of 511.1 kg/hm^2, benefit increase of 973.67Yuan/hm^2, among them, the application of zinc sulfate 22.5 kg/hm^2 on the basis of base fertilizer will have the best effect and best benefit of 13023.15Yuan/hm^2.
出处
《广西农学报》
2014年第4期4-5,9,共3页
Journal of Guangxi Agriculture
基金
国家测土配方施肥资金补贴项目(桂农财[2007]42号)
关键词
水稻
锌肥
影响
Rice
Zinc fertilizer
impact
