摘要
研究了不同化肥施用量对日光温室有机基质型无土栽培甜瓜产量及N、P和K吸收量、吸收比例和利用率的影响。结果表明:适量施用化肥可显著提高甜瓜果实产量,提高有机基质养分和化肥利用率;化肥施用过多,基质养分和化肥利用率均有所降低;研究确定的日光温室有机基质型无土栽培甜瓜适宜化肥施用量计算方法为:(甜瓜目标产量需肥量-有机基质速效养分量)/化肥养分吸收率。
Muskmelon, soillessly cultured with organic substrate was used to study fertilization effect on yield, nutrient absorption and distribution, and utilization rates of N,P and K. Results indicate an obvious increase in yield and nutrient utilization rate of muskmelon. But nutrient utilization rate decreases once fertilization ratio approaches excessive levels. Muskmelon yield is highest in the second treatment where the amount of applied fertilizer is calculated by using the following equation： Fertilizer amount = （fertilizer for desired output- organic substrate nutrient content）/nutrient uptake ratio.
出处
《中国生态农业学报》
CAS
CSCD
2007年第5期84-86,共3页
Chinese Journal of Eco-Agriculture
基金
国家"十五"科技攻关项目(2002BA516A07)
山东省教育厅项目(J00152)资助
关键词
甜瓜
无土栽培
有机基质
化肥
产量
养分利用率
Muskmelon, Soilless culture, Organic substrate, Fertilizer, Yield, Nutrient utilization rate
作者简介
通讯作者
