Low Plant Density Improves Fruit Quality without Affecting Yield of Cucumber in Different Cultivation Periods in Greenhouse
文献类型: 外文期刊
作者: Ding, Xiaotao 1 ; Nie, Wenfeng 2 ; Qian, Tingting 1 ; He, Lizhong 1 ; Zhang, Hongmei 1 ; Jin, Haijun 1 ; Cui, Jiawei 1 ; Wang, Hong 1 ; Zhou, Qiang 1 ; Yu, Jizhu 1 ;
作者机构: 1.Shanghai Acad Agr Sci, Hort Res Inst, Shanghai Key Lab Protected Hort Technol, Shanghai 201403, Peoples R China
2.Yangzhou Univ, Coll Hort & Plant Protect, Dept Hort, Yangzhou 225009, Jiangsu, Peoples R China
关键词: photosynthesis; dry matter; biochemical compositions; production; sowing date; semi-closed greenhouse
期刊名称:AGRONOMY-BASEL ( 影响因子:3.949; 五年影响因子:4.117 )
ISSN:
年卷期: 2022 年 12 卷 6 期
页码:
收录情况: SCI
摘要: With the development of the economy, the demand for cucumber quality is quickly increasing. The aim of this study was to elucidate the role that plant density plays in leaf photosynthesis, shoot dry matter distribution, yield and quality of cucumber in different cultivation periods under greenhouse conditions. Experimental treatments based on three plant density treatments (2.25, 3.0 and 3.75 plants m(-2)) were conducted in turn during three growth and harvest periods in a year. The results showed that the changes in photosynthesis and weekly yield per unit area were different and dependent on the harvest time, which was mainly induced by temperature and radiation. Interestingly, we found that reducing plant density did not significantly affect the photosynthesis of leaves and did not decrease weekly yield per unit area and total yield. Low-density treatment had the highest weekly yield per plant and total yield per plant in the three harvest periods, the highest ratio of dry matter being allocated to fruits and the highest contents of soluble sugar, total phenols, flavonoid, soluble protein, vitamin C (Vc), chlorophyll and carotenoids in fruits. Moreover, a relatively low nitrite content was found in fruits following low-density treatment. The study indicated that low-density treatment was associated with a high quality of fruits without reducing the cucumber's total annual yield under natural light in the greenhouse. Hence, our study suggests that properly reducing cucumber plant density to 2.25 plants m(-2) could be a practicable approach for greenhouses in Shanghai, China.
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