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Journal of Desert Research ›› 2018, Vol. 38 ›› Issue (5): 1059-1067.DOI: 10.7522/j.issn.1000-694X.2018.00070

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Effect of Drip Irrigation under Film on Growth,Fruiting Characters and Nutrition Elements Content of Pear Plant in Jingtai, Gansu, China

Cao Gang1, Li Hongxu1, Zhang Ming2, Liu Xiaoyong1, Heng Wei2, Zhao Mingxin1, Zhu Liwu2   

  1. 1. Insitute of Fruit and Floriculture Research, Gansu Academy of Agricultural Science, Lanzhou 730070, China;
    2. Key Laboratory of Pomology, Anhui Agricultural University, Hefei 230036, China
  • Received:2018-04-12 Revised:2018-05-18 Online:2018-09-20 Published:2018-11-03

Abstract: The study discussed the physiological mechanism of pear under drought condition and investigated the optimized water-saving irrigation model of pear orchards in arid and semiarid region of central and western Gansu.Five drip irrigation treatments (T1-T5) and flood irrigation (CK) had been conducted in a 9-year-old ‘Huang-guan’ pear orchard.The pear fruit yield,quality and nutrient elements content were measured at fruit mature stage,and the annual growth of shoots and leaf development were analyzed,aiming to evaluate the comprehensive effects of different treatments.Compared with the CK,there was no obvious change on leaf size and of chlorophyll-a,b content,but different treatments significantly affected the matter accumulation,water loss rate and water saturated deficit of leaves.A significant negative correlation was found between irrigation amount and shoot length/diameter,T5 promoted shoot growth better than other treatments.The nutrient elements content were significantly affected by different treatments,T3 could improve the elements content of leaves,and the accumulation of nutrient elements in fruits significantly promoted with T2.The irrigation amount had significant negative correlation with P content in leaves,but had no significant correlation with nutrient elements in fruit.Compared with the CK,there was no significant difference of fruit yield among T3 and T5,meanwhile T5 could significant promote SSC and the synthetic evaluation value reached a maximum.In conclusion,T5 should be the suitable water-saving irrigation model for the pear orchard of desert areas in consideration of quality and overall performance.

Key words: pear, drip irrigation under film, growth, fruit quality, nutrition elements

CLC Number: