|Table of Contents|

Effect of Nitrogen and Phosphorus Regulation on Crop Yield and Nutrient Efficiency Under Soybean and Maize Rotation(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2019年05期
Page:
762-769
Research Field:
Publishing date:

Info

Title:
Effect of Nitrogen and Phosphorus Regulation on Crop Yield and Nutrient Efficiency Under Soybean and Maize Rotation
Author(s):
(Agronomy College of Heilongjiang Bayi Agricultural University, Daqing 163319, China)
Keywords:
Soybean-maize rotation;  Nitrogen and phosphorus regulation;  Yield;  Nutrient utilization efficiency
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2019.05.0762
Abstract:
This research was conducted to explore the effect of different year-round regulation models of combined application of nitrogen and phosphorus nutrients on grain yield and nutrient efficiency of soybean-maize rotation system, in order to identify an optimal model under soybean-maize rotation system in Heilongjiang reclamation region.The field experiment was persistently performed in black soil area located in Heshan Farm Technological Park,Jiusan Administration Bureau of Heilongjiang province in two growing seasons(2017 and 2018),soybean-maize and maize-soybean rotation were planted respectively in 2017, reducing nitrogen and increasing phosphorus in soybean stubble,increasing nitrogen and reducing phosphorus in maize stubble,to ensure that the total amount of nitrogen and phosphorus fertilizer was the same during rotation period. And the effects of this rotation on absorbance and utilization of N, P, K fertilizers and yield by soybean and maize crops were studies. The results showed that:(1)Compared with conventional fertilization, S2 treatment of decreasing 1/2 N fertilizer on soybean and increasing 1/2 P fertilizer on maize in soybean stubble and M2 treatment of increasing 1/2 N fertilizer on soybean and decreasing 1/2 P fertilizer on maize could improve the single yield of soybean and maize.And the annual yield of the crop rotation significantly increased, in which the annual yield of soybean-maize rotation increased by 10.05%,the annual yield of maize-soybean rotation increased by 13.44%.(2)Compared with conventional fertilization,the total amount of N, P, K nutrients in the aboveground, nitrogen, phosphorus, potassium fertilizer partial factor productivity, and nitrogen, phosphorus, potassium uptake efficiency of the S2 treatment in soybean reason and M2 treatment in maize in the rotation system were higher than other treatments, in which the total nitrogen uptakes, NPFP, NUPE increased by 22.90%, 10.09%, 25.12% and 11.10%, 13.44%, 1.39%. Total phosphorus uptakes, PPFP and PUPE increased by 8.24%, 12.50%, 7.58% and 6.90%, 13.45%, 8.45%. Total potassium uptakes, KPFP and KUPE increased by 18.93%, 12.50%, 19.06% and 0.52%, 13.45%, 0.71%. In conclusion, under the condition of ensuring the same amount of fertilizer during rotation period,decreasing 1/2 N fertilizer of soybean and increasing 1/2 phosphorus fertilizer of maize in soybean stubble, increasing 1/2 N fertilizer of soybean and decreasing 1/2 phosphorus fertilizer of maize in maize stubble could improve the utilization efficiency of three main nutrients and yield of soybean and maize crops. This model could be an optimal model of main nutrient application for soybean and maize yields and use efficiency of fertilizers in soybean and maize rotation in the Jiusan Administration Bureau of Heilongjiang province.

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Last Update: 2019-09-20