摘要
通过在旱地高粱作物上连续3年定点实施不同有机肥施用试验,结果表明:不同有机肥均能培肥旱地土壤,改善土壤的物理性状,以农家肥配合豆科绿肥翻压(处理C)土壤理化性状变化最明显,不施肥处理养分含量均呈下降趋势。3年高粱平均产量以处理E(施用商品有机肥)增产最显著;处理B、C、D有机肥还田总量不变,但高粱产量还是有明显差异。不施肥处理高粱产量逐年递减。说明,土壤养分资源是有限的,必须及时培肥。
The results from the experiments of applying different organic fertilizer in sorghum planted on the fixed dry land for 3 years showed that different organic fertilizer could raise the soil fertility and improve the soil texture. The soil physico-chemieal properties applied with farmyard manure and crop green manure was the best and the soil nutrition content without applying any fertilizer showed a decline trend. The average yield of three years with applying commercial organic fertilizer was the highest in tested treatments and the yield of the treatment without applying any fertilizer reduced year by year, which indicates the soil nutrition is limited and the soil fertility should be kept by applying fertilizer.
出处
《贵州农业科学》
CAS
2008年第4期87-87,89,共2页
Guizhou Agricultural Sciences
基金
遵义市"十五"农业科技攻关项目"有机食品--茅台酒用高粱标准化施肥及配套栽培技术体系研究与应用"[(2005)001]
关键词
有机肥
旱地
土壤肥力
高粱
产量
organic fertilizer
dry land
soil fertility sorghum
yield
