Effects of Density and Row Spacing on Photosynthetic Characteristics and Yield of Pigment Peppers(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effects of Density and Row Spacing on Photosynthetic Characteristics and Yield of Pigment Peppers

Author(s):: WANG Jingjing; ZHANG Zikun; ZHANG Hongyong; LI Hua; LI Tengfei; HE Hongjun; WANG Lei; CHANG Peipei; (Dezhou Academy of Agriculture Science,Dezhou,Shandong 253015)

Keywords:: density; row spacing; pigment peppers; photosynthetic characteristics; yield

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, 52 500 plants?hm-2) and row spacing configurations (70 cm+50 cm, 60 cm+60 cm, 80 cm+40 cm) 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 7 201.40 kg?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 80 cm+40 cm in three densities. Therefore, the best cultivation method of pigment pepper was 80 cm+40 cm row spacing under 82 500 plants?hm-2, which made group yield potential largest.

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Last Update: 2017-01-18