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| DOI：10.13522/j.cnki.ggps.2017.0395 |
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| Effects of Different Fertigation on Growth, Yield and Quality of Solar-greenhouse Sweet Pepper |
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FU Lei, WEI Min, LI Yan, YANG Fengjuan, SHI Qinghua, WANG Xiufeng
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1. College of Horticultural Science and Engineering of Shandong Agricultural University, Tai’an 271018, China；2. Scientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region, Ministry of Agriculture and Rural Affairs, Tai’an 271018, China; 3. State Key Laboratory of Crop Biology, Tai’an 271018, China; 4. Collaborative Innovation Center of Protected Vegetable Surround Bohai Gulf Region, Shenyang 110866, China
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| Abstract: |
| 【Objective】 Physiological development of crop is controlled by water and nutrient availability, and this paper is to study the impact of different fertigation on yield and fruit quality of sweet pepper grown in solar greenhouse.【Method】 The experiments examined two varieties, ‘Ansha19’ and ‘Aodaili’, and compared six treatments: conventional furrow irrigation with periodic fertilizer topdressing (CK1), conventional drip irrigation with periodic fertilization (CK2), daily fertigation with 1/4 , 1/2 , 3/4 and 4/4 of the strengthened Yamazaki specific nutritious ingredients for sweet pepper formula along with the recipes of trace elements, which were referred as to T1, T2 T3 and T4 respectively. The effects of different fertigation on growth, yield and quality of the sweet pepper cultivated in a solar greenhouse were measured. 【Result】 Compared with CK1 and CK2, daily fertigation with the nutrient solution promoted growth of the sweet pepper, increased the length, surface area, volume, apex number and dry matter of the root, enhanced root vigor and SOD activity, decreased malondialdehyde content, improved fruit yield and quality, water use efficiency and partial productivity of the fertilizer. With nutrient concentration in the drip irrigation increasing, the growth, yield, quality and water production efficiency of the sweet pepper first increased and then decreased, while the partial productivity of the fertilizer decreased monotonically. Fruit number and yield maximized in T2, and there was no significant difference in them between T1, T3 and T4. Compared to CK1 and CK2, T2 increased the yield of spring-pepper by 31.11% and 22.44% respectively, and of autumn-winter pepper by 35.52% and 16.29%, respectively, in addition 9.45%~30.92% increase in water saving and 59.71%~64.60% fertilizer saving. The contents of Vc, soluble sugar and free amino acid were the highest in T2 and lowest in CK1. 【Conclusion】 Daily fertigation promotes the growth and yield of the sweet pepper, in addition to improving its fruit quality, water and fertilizer use efficiency. |
| Key words: sweet pepper; irrigation; fertilization; solar greenhouse; yield; quality |
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