|Table of Contents|

Effects of Potassium Fertilizer Application on Nitrogen Accumulation after Flowering in Vegetable Soybean and Grain Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年02期
Page:
262-267
Research Field:
Publishing date:

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Title:
Effects of Potassium Fertilizer Application on Nitrogen Accumulation after Flowering in Vegetable Soybean and Grain Soybean
Author(s):
TIAN Bowen1; 2;  LI Yansheng2;  YANG Yue1; 2;  LI Rui1; 2;  TU Bingjie1; 2;  LIU Changkai2; 3;  ZHANG Qiuying2;  LIU Xiaobing1; 2
1College of Natural Resources and Environment, Northeast Agricultural University, Harbin 150081, China;?
2Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology Chinese Academy of Sciences, Harbin 150081, China;?
3University of the Chinese Academy of Sciences, Beijing 100049, China
Keywords:
Vegetable soybean;  Potassium application;  Nitrogen accumulation;  Reproductive stage
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.02.0262
Abstract:
Sufficient potassium nutrition can improve crop resilience and enhance crop yields With the increase of nitrogen and phosphate fertilizer application in crop production, potash fertilizer has been the limiting factor for the enhancement of crop yield Seed formation after flowering is the main period of dry matter accumulation, as well as determination stage for soybean yield However, the effect of potash fertilizer on the nitrogen accumulation after flowering to vegetable soybean and grain soybean was seldom reported In this study, based on the rates of normal nitrogen and phosphorus fertilizer application, three potassium(K) fertilization treatments were imposed: No K application(K0), 120 kg?ha-1 K2SO4 at seeding(K1), and 120 kg?ha-1K2SO4 at seedling +1% K2SO4 foliar application at flowering(K2) The nitrogen accumulations in grain, leaf and stem of soybean from 28-56 days after flowering between vegetable soybean and grain soybean were investigated The results showed that potassium application increased the nitrogen accumulation in both types of soybeans The amount of nitrogen accumulation under different fertilization treatments was in the order of K2>K1>K0, and the amount of nitrogen accumulation in each part was in the order of seed>leaf>stem The potassium application had more prominent effect on seed nitrogen accumulation in vegetable soybean than that of grain soybean Compared with K0, the average nitrogen content in K2 treatment was 0.19% and 0.1% for vegetable soybean and grain soybean respectively Compared with K0 treatment, K1 and K2 treatments increased the nitrogen translocation efficiency by 6.1% and 8.2% in vegetable soybean leaves, but had no effect on grain soybean leaves Stem nitrogen accumulation in grain soybean was significantly increased by potassium application, while the responses varied between vegetable soybean cultivars

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Last Update: 2017-05-14