关键词: 设施栽培, 小松菜, 肥料种类, 施肥水平, 种植密度

Abstract: In order to study effects of fertilizer kinds and rates as well as planting density on growth and yield of Komatsu dish under facility cultivation condition，an orthogonal design experiment of 3 kinds of fertilizers（tea dregs organic\|inorganic compound fertilizers， inoue Masa microbial fertilizer and fulvic acid potassium），3 fertilization levels and 3 kinds of planting density（27，36，and 45×104 plant· hm-2）was selected. The results of the experiment showed that improvement of growth and increases of yields of Japanese Komatsu dish generally followed the order: plant densities>fertilizer rates>fertilizer kinds. Optimum application rates of tea dregs organic\|inorganic compound fertilizers was 1 125 kg·hm-2；while inoue Masa microbial fertilizer and fulvic acid potassium was all 300 kg·hm-2 under the condition of application of 345 kg·hm-2 NPK compound fertilizer. Optimum planting density of Komatsu dish for improving the utilization rate of export goods was 36×104 plant·hm-2. The highest yields and economic benefits of Komatsu dish was obtained from the treatment with 300 kg·hm-2 of inoue Masa microbial fertilizer and 45×104 plant·hm-2 of planting density．

Key words: facility cultivation, Komatsuna dish, fertilizer kinds, fertilizer rates, planting density