Effect of Water and Fertilize Coupling Modes on Leaf Photosynthetic Efficiency and Fruit Quality in Huangguan Pears(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Effect of Water and Fertilize Coupling Modes on Leaf Photosynthetic Efficiency and Fruit Quality in Huangguan Pears

Author(s):: WANG Lifei1; LIU Shuilin1; LI Yingli1; 2; LE Wenquan3; XU Jintao3; ZHANG Jianguang1; 2; （1.College of Horticulture，Agricultural University of Hebei,Baoding，Hebei 071000；2.Pear Engineering and Technology Research Center of Hebei Province，Baoding，Hebei 071001；3.Changli Fruit Research Institute，Hebei Academy of Agriculture and Forestry Sciences，Changli，Hebei 066600）

Keywords:: pear; Huangguan pear; water and fertilizer coupling; phytosynthetic efficiency; fruit quality

Abstract:: With six year-old Huangguan pear trees as test meterials，the effect of water and fertilize coupling modes on leaf photosynthetic efficiency and fruit quality was studied in order to screen out the best mode for water and fertilizer coupling.The results showed that water was the contributing factor influencing the efficacy on water and fertilizer coupling，the treatments with half amount and double amount of water were not as excellent as normal amount of water with respects to leaf phytosynthetic efficiency and fruit quality,the adverse effect was the severest if no water was applied.Among different treatments，the normal water+half fertilizer(NH) was the best，with the highest leaf Pn，SSC and titratable acidity being 13.4 μmol?m-2 ?s-1，13.70% and 0.111%，respectively，significantly higher than the control and most of treatments.However，there was no significant difference in fruit firmness among all the treatments.Therefore，for sake of economical fertilization and favorable effect on improving fruit quality，the NH mode was recommended when pear trees were being dressed.

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Last Update: 2015-09-29