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- Title
Combined effect of nitrogen and phosphorous fertiliser on nitrogen absorption and utilisation in rice.
- Authors
YATING ZHENG; HONG CHEN; GUOTAO YANG; RUDAN WANG; FARHAN, NABI; CHONG LI; CHENG LIANG; KAIQIN SHEN; XUECHUN WANG; YUNGAO HU
- Abstract
The objectives of this study were to investigate the nitrogen (N) and phosphorus (P) balance fertilisation strategy in paddy fields and to evaluate the effects on N uptake and utilisation in rice. In 2017–2018, the experiment was conducted using cv. Deyou4727 rice with four different P fertiliser levels (0, 6.6, 13.2, and 26.4 kg/ha), marked as P0, P1, P2, P3 in turn, and four different N levels (0, 90, 150, and 270 kg/ha), similarly marked as N0, N1, N2, N3 in turn. The results showed that in the N-insufficient (N0, N1) environments, the P1 treatment increased N uptake and promoted transfer to the grain. However, high-P (P3) application increased the dry matter accumulation more than other P levels but limited the production and translocation of dry matter to some extent. In N-sufficient (N2, N3) environments, the P2 level increased crop yield and N use efficiency by 11.35% and 37.01%. Unlike P2, none-P (P0) and high-P levels decreased rice dry matter translocation and transport capacity, which further affected N uptake and utilisation in N-sufficient environments. Overall, the combination of the N application rate of 90 kg/ha and P application rate of 13.2 kg/ha, N application rate of 150, 270 kg/ha, and P application rate of 26.4 kg/ha had a high yield; strong nutrient accumulation and transfer ability. It was more inclined to balance N and P, which was beneficial to plant N absorption and utilisation.
- Publication
Plant, Soil & Environment, 2023, Vol 69, Issue 1, p25
- ISSN
1214-1178
- Publication type
Article
- DOI
10.17221/420/2022-PSE