|Table of Contents|

Effects of Potassium Fertilizer on Chlorophyll Content of Vegetable Soybean in Reproductive Stages(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2012年06期
Page:
941-946
Research Field:
Publishing date:

Info

Title:
Effects of Potassium Fertilizer on Chlorophyll Content of Vegetable Soybean in Reproductive Stages
Author(s):
DU Ming1; 2; LI Yan-sheng1; 3; ZHANG Qiu-ying1; GU Si-yu2; LIU Xiao-bing1
1.Key Laboratory of Mollisols Agroecology,Northeast Institute of Geography and Agroecology,Chinese Academy of Sciences,Harbin 150081,Heilongjiang;
2.College of Resources and Environment,Northeast Agricultural University,Harbin 150030,Heilongjiang;
3.Graduate University of the Chinese Academy of Sciences,Beijing 100049,China
Keywords:
Vegetable soybean; Pod-setting; Chlorophyll a; Chlorophyll b; Potassium application
PACS:
S643.7
DOI:
10.3969/j.issn.1000-9841.2012.06.018
Abstract:
The effects of four potassium fertilizer amounts(0,60,120,180 kg·ha-1)with additional foliar application of 30 kg·ha-1 potassium at flowering-podding on chlorophyll content in vegetable soybean were investigated under normal N and P fertilizers application.Though responsed differ in cultivars,potassium application at seeding significantly increased the chlorophyll content during reproductive growth period.Maximum chlorophyll contents were all obtained at 120 kg·ha-1 K2SO4 in cv. Zhongkemaodou No.1 and line No.121.Compared with control,the chlorophyll contents of cv.Zhongkemaodou No.1 at flowering,pod-setting and seed filling of 120 kg·ha-1 K2SO4 were increased by 9.1%,22.7% and 13.0%;while line No.121 were increased by 33.3%,17.4% and 13.0%,respectively.The increase in chlorophyll content of 120 kg·ha-1 K2SO4 at seeding was mostly due to the increase in content of chlorophyll a,and thus an increase in chlorophyll a/b ratio.The increases in chlorophyll content by additional foliar application of potassium varied in cultivars and growth stages.The increased yield by potassium application was closely related to chlorophyll content,especially the content of chlorophyll a.

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Last Update: 2014-08-20