|Table of Contents|

Effect of Spraying Uniconazole on Carbon and Nitrogen Metabolism and Yield of Relay Strip Intercropping Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2015年01期
Page:
75-81
Research Field:
Publishing date:

Info

Title:
Effect of Spraying Uniconazole on Carbon and Nitrogen Metabolism and Yield of Relay Strip Intercropping Soybean
Author(s):
YAN Yan-hong1;  WAN Yan2; 3;  YANG Wen-yu2; 3;  WANG Xiao-chun2; 3;  YONG Tai-wen2; 3;  LIU Wei-guo2; 3;  ZHANG Xin-quan1
1. College of Animal Science and Technology, Sichuan Agricultural University, Ya’an 625014, China; 2. College of Agronmy, Sichuan Agricultural University, Wenjiang 611130, China; 3. Key Laboratory of Crop Ecophysiology and Farming System in Southwest China, Ministry of Agriculture, Wenjiang 611130, China
Keywords:
Relay strip intercropping soybean;  Uniconazole;  Excessive vegetative growth;  Carbon and nitrogen metabolism;  Yield
PACS:
S565.106;Q945.11
DOI:
10.11861/j.issn.1000-9841.2015.01.0075
Abstract:
In the relay strip intercropping system of corn-soybean, the soybean cultivar, Gongxuan 1, was used to study the effects of spraying uniconazole on soybean carbon and nitrogen metabolism, dry matter accumulation after flowering and yield. The results showed that, uniconazole had significant physiological effects to promote carbon and nitrogen metabolism of soybean plants under different nitrogen levels, which could increase the content of total sugar and nitrogen of leaf and stem before the R5 stage, decrease total sugar content at R7 stage, significantly increase the difference of percentage in total sugar content between R3 and R7 stage. The carbon nitrogen ratio of leaf between R2 and R3 stage was increased, whereas it was significantly decreased after R5 stage by spraying uniconazole. The dry matter accumulation between R3 and R7 stage, number of pods, 100-seed weight and yield were promoted by spraying uniconazole. The dry matter accumulation and yield was the highest with 60 mg?kg-1?uniconazole spraying under lower nitrogen level (0 kg?ha-1), or 30 mg?kg-1?uniconazole spraying under moderate nitrogen level (32.4 kg?ha-1), or 90 mg?kg-1?uniconazole spraying under higher nitrogen level (64.8 kg?ha-1). In combination with performances of carbon and nitrogen metabolism, dry matter accumulation and yield, the best treatment was spraying 30 mg? kg-1?uniconazole at V5 stage under moderate nitrogen level (32.4 kg?ha-1).

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Last Update: 2015-04-12