摘要
通过连续 12 a田间小区定位试验 ,研究了在不同施肥方式下 ,连年稻 -麦轮作的滇中地区紫色冲积性潴育型水稻土土壤肥力及产量变化的规律。结果表明 :厩肥 (O)处理与厩肥配合氮磷处理 (ONP)12 a后土壤肥力明显高于对照和单施化肥的 NP、NK、PK、NPK等 4处理 ,土壤有机质含量增加 8.4 g/kg以上 ,速效氮、速效磷、速效钾含量增加 14.6 %以上 ,土壤容重下降 0 .16以上 ;单施化肥的处理 ,土壤肥力的变化与对照无显著差异。
The relationship of fertilization methods with the soil fertility and output of the purplish paddy soil has been studied for 12 successive years in central Yunnan. It is a stationary plot experiment in the filed with the rotation system of rice and wheat. The experiment has 7 treatments, that is, O (farmyard manure), ONP (farmyard manure plus N and P),NP, NK, PK, NPK and the Control. The results of the experiment show that Treatment O and Treatment ONP are much higher than the Control and the other four treatments in soil fertility, with soil organic matter increased by 8.4g/kg or more, readily available N, P and K by 14.6% or more and soil bulk capacity decreased by 0.16 or more against the Control. The other four treatments, however, do not show any big difference from the Control in soil fertility.
出处
《农村生态环境》
CSSCI
CSCD
2000年第3期23-26,共4页
Rural Eco-Environment
基金
农业部<滇中紫色水稻土长期肥力定位试验课题>资助
关键词
紫色水稻土
长期肥力定位试验
土壤肥力
施肥
soil fertility, long term stationary experiment, purplish paddy soil, Chuxiong
