【摘要】 以色素辣椒‘0409’为试材,采用裂区试验设计,设置不同种植密度(82 500、67 500、52 500株·hm-2)不同行距配置(70cm+50cm、60cm+60cm、80cm+40cm),研究密度和行距配置对色素辣椒光合特性及产量的影响。结果表明:密度和行距配置均显著影响色素辣椒产量。随着种植密度的增加,叶面积指数和群体干物质积累均增加,而功能叶的光合速率(Pn)、气孔导度(Gs)和蒸腾速率(Tr)逐渐减小,青果数和落果率增加,单株商品果数减少,但是较高的有效公顷株数足以弥补它的劣势,所以密度为82 500株·hm-2时产量最高,平均为7 201.40kg·hm-2;同一密度下不同行距配置时大小行种植比等行距更有利于获得高产,在3个密度下80cm+40cm行距配置的叶面积指数、群体干物质积累、功能叶的Pn、Gs和Tr以及单株商品果数均高于其它2个行距配置,产量为最高。因此,82 500株·hm-2种植密度、80cm+40cm行距配置为色素辣椒最佳栽培方式,群体增产潜力最大。更多还原

【Abstract】 To study effects of density and row spacing on photosynthetic characteristics and yield of pigment peppers,the cultivar‘0409’was used as test material that planted under different densities(82 500,67 500,52 500plants·hm-2)and row spacing configurations(70cm+50cm,60cm+60cm,80cm+40cm)using split test design.The results showed that densities and row spacing configurations had significant effects on yield of pigment peppers.With planting densities increasing,the leaf area index and group dry matter accumulation increased,the photosynthetic rate(Pn),stomatal conductance(Gs)and transpiration rate(Tr)of functional leaves decreased gradually,the number of green fruit and the rate of fruit dropping increased,while the number of fruit per plant decreased.Higher effective number of hectares made up its disadvantages enough,so the highest yield was 7 201.40kg·hm-2 on average under 82 500 plants per hectare.Under the same density,wide-narrow row planting in different row spacing was more conducive to high yield than equal row spacing.The leaf area index,dry matter accumulation,Pn,Gs and Tr of functional leaves and the number of fruit per plant were higher than the other two row spacing under 80cm+40cm in three densities.Therefore,the best cultivation method of pigment pepper was 80cm+40cm row spacing under 82 500plants·hm-2,which made group yield potential largest.更多还原