摘要
为探索矿物硅钾肥的后效作用,本研究在第一茬油菜收获后继续种植水稻,比较了不同处理对水稻生理指标和土壤速效钾和缓效钾的影响。结果表明:在不施氮磷肥的情况下,单施硅钾肥对水稻生长没有明显的后效促进作用。在氮磷供应充足的情况下,硅钾肥相比常规施肥具有更好的后效作用,主要体现在对水稻产量的促进上,硅钾肥各处理的总体增产效果为5.9%,其中使用量最高的处理(NPK+Si K3)增产效果达12.0%。土壤速效钾含量结果表明硅钾肥比常规肥料更能促进水稻对土壤养分的吸收。
In order to study the aftereffects of silicon-potassium mineral fertilizer,we planted rice after the rape harvest,and compared the fertilizer effects on the physiological characteristic and soil available potassium and slowly available potassium content.The results showed that no evident acceleration was found on rice growth in Si K compared with CK treatment.In the case of sufficient nitrogen and phosphorus supply,silicon-potassium mineral fertilizer showed better aftereffects than conventional fertilizer,which was mainly reflected on the improved of rice yields.The mean increase production effect of various silicon-potassium mineral fertilizer treatments was 5.9%,and the increase production effect of NPK＋Si K3 reached12.0%.The result of soil available potassium indicated that silicon-potassium mineral fertilizer performed better than conventional fertilizer in improving of the absorption of rice on soil nutrients.
出处
《现代农业科技》
2016年第14期18-20,共3页
Modern Agricultural Science and Technology
基金
农业部行业专项(201303089-2)
农业部行业专项(20130-3101-06)
国家科技支撑项目(2014BAD24B02-2)
国家科技支撑项目(2012BAD14B01-08)
北京市农林科学院青年科研基金(QNJJ201413)
关键词
硅钾肥
水稻
后效作用
产量
silicon-potassium mineral fertilizer
rice
aftereffects
yield
