|Table of Contents|

Effects of Different N Application Levels on Soil，Leaf Nutrients and Fruit Quality in Pear Orchards

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2023年03
Page:
15-23
Research Field:
Publishing date:

Info

Title:
Effects of Different N Application Levels on Soil，Leaf Nutrients and Fruit Quality in Pear Orchards
Author(s):
YU Sihai1; 2; 3; ZHI Jinhu1; 2; 3; TANG Zhihui4; ZHENG Qiangqing5; YANG Lili1; 2; 3; AN Shijie1; 2; 3
(1.College of Agriculture，Tarim University，Alar，Xinjiang 843300；2.Research Center of Oasis Agricultural Resources and Environment in Southern Xinjiang，Tarim University，Alar，Xinjiang 843300；3.Collaborative Innovation Center of Ecological Agriculture Around Tarim，Alar，Xinjiang 843300；4.Institute of Mechanical Equipment，Xinjiang Academy of Agricultural Reclamation Sciences...
Keywords:
nitrogen application level; nitrate nitrogen; ammonium nitrogen; alkaline nitrogen; leaf total nitrogen; fruit quality
PACS:
-
DOI:
10.11937/bfyy.20221847
Abstract:
Taking Korla fragrant pear grafted by the Ninth Regiment of Alar City in Xinjiang for five years as experimental materials，the effects of different nitrogen application levels (N1 (150 kg?hm-2)，N2 (225 kg?hm-2)，N3 (300 kg?hm-2)，N4 (375 kg?hm-2)，and N5 (450 kg?hm-2)) on soil nitrogen nutrients and total nitrogen content of plant leaves during the growth period of Korla fragrant pear orchard were studied through randomized block design，in order to explore the appropriate nitrogen application amount in pear orchard.The results showed that the effect of increasing N fertilizer application on soil nutrient content of 0-40 cm soil layer was more significant，and the content of nitrate nitrogen，ammonium nitrogen and alkaline nitrogen in 0-40 cm soil layer showed a general trend of ‘increase-decrease-increase’；with the increase of N fertilizer application，the content of nitrate nitrogen，ammonium nitrogen and alkaline nitrogen in each treatment changed as follows,0-20 cm>20-40 cm>40-60 cm.With the increase of nitrogen fertilizer application，the total nitrogen content of pear leaves showed an ‘increasing-decreasing’ trend，and the total nitrogen content of each treatment showed that the leaves of current year branches>leaves of multi-year branches.The content of stone cells，soluble sugar and vitamin C content showed an increasing trend with the increase of N fertilization，and then decreased.N3 and N4 treatments had higher nutrient content and better fruit quality.

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Last Update: 2023-02-22