不同培肥方式对黑土肥力持续效应影响的研究 Ⅱ.土壤磷、钾持续效应  

THE SUSTAINABLE EFFECTS OF DIFFERENT FERTILIZING MATERIALS ON FERTILITY OF BLACK SOILS

作　　者：张玉先[1] 王根林[1] 李胜林 

机构地区：[1]黑龙江八一农垦大学,密山158308 [2]红兴隆管局研究所

出　　处：《黑龙江八一农垦大学学报》2001年第2期14-18,共5页journal of heilongjiang bayi agricultural university

摘　　要：通过长期定位试验（1986～1997年），采用正交旋转回归设计，在黑土地区不同培肥方式条件下，对土壤磷、钾持续效应进行研究。研究表明：培肥阶段除不施肥区外,土壤磷、钾量都有所增加。进入耗竭阶段后,土壤磷、钾又不同程度的下降,只是不同处理变化速度不同而已。不同培肥方式的磷、钾变化，在培肥阶段的贡献和耗竭阶段的残效，均依次为农肥>化肥>秸杆。With the method of rotational regression design, a long-term fertilizing location test was carried out with farm manure, chemical fertilizer and straw on black soils from 1986 to 1997. Result had been proved that Phosphorus and Potassium had been increased except no-fertilizer during the fertilized stage. Phosphorus and Potassium were declined with different speed during the exhausted stage. Farm manure, chemical fertilizer and straw had different sustainable effects. The farm manure was superior to others in sustainable effect and it could totally improve the physical, chemical and biological characteristics of soil because of its full nutrients and low degradation rate.

关 键 词：农肥 化肥 秸秆 黑土 持续效应 土壤钾 土壤磷 培肥方式 磷肥 钾肥 

分 类 号：S147.5[农业科学—肥料学]