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Effect of Potassium Fertilizer on Dry Matter Accumulation，Yield and Quality of Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2008年01期
Page:
113-117
Research Field:
Publishing date:

Info

Title:
Effect of Potassium Fertilizer on Dry Matter Accumulation，Yield and Quality of Soybean
Author(s):
YAN Chun-juan1; 2; HAN Xiao-zeng1; 2; WANG Shu-qi1; WANG Shou-yu1; LI Hai-bo1; and WANG Feng-xian1
1 Northeast Institute of Geography and Agricultural Ecology，CAS，Harbin 150081，Heilongjiang；
2 Northeast Agricultural University，Harbin 150030，Heilongjiang，China
Keywords:
Soybean; Potassium; Dry matter accumulation; Root to shoot; Protein; Fat; Yields
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2008.01.0113
Abstract:
Spring soybean is one of main crops cultivated in Heilongjiang province in China.The annual planted area is 2-2.3 million hectares.Thus，it is urgent to enhance the yield and its quality.Potassium fertilizer plays a vital role in the period of crop growth and development as well as its quality improving.The objective of current research was to provide technical support for high yield and quality of soybean production with high efficiency fertilization in Heilongjiang province.Pot-experiments were carried out to study the effect of potassium fertilizer on dry matter accumulation，yield and quality of soybean.Five potassium fertilizer supply levels 0，0.034，0.068，0.102，0.136 g K2O kg-1soil denoted as K1，K2，K3，K4，K5，were used in this experiment.The results showed that potassium enhanced the dry matter accumulation at flowering (R1)，however，no significant difference was observed for the five K treatments.The dry matter accumulation showed increased and then decreased trend with the increment of potassium amount at podding(R3) and pod filling(R5)，and significant difference among different treatments were observed at pod filling (R5) but not at podding（R3).The optimum application rate of potassium was K3 (0.068 g K2O kg-1?soil) for dry matter accumulation at podding（R3) and pod filling (R5).The ratio of root to shoot decreased with the growing of soybean，which was lowest at pod filling (R5).The root to shoot ratio declined sharply after the peak in K2 with potassium fertilizer application at flowering (R1) and podding（R3).K3 was the maximum value for the root to shoot ratio at pod filling stage (R5).The application of potassium fertilizer was beneficial to oil accumulation but not to protein accumulation.The more the application of potassium fertilizer，the more yield soybean would reach.The optimum rate of potassium fertilizer for yield was K5 (0.136 g K2O kg-1soil)，which was significantly superior to no-potassium (K1) treatment.

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Last Update: 2014-10-09