Effects of Interaction between Nitrogen Fertilizer and Planting Density on Leaf Type,Photosynthetic Characteristics and Yield of Mechanical-transplanting Super Hybrid Rice
CHEN Qian
LIU Ke
HE Aibin
LONG Jirui
LU Bilin
TIAN Xiaohai
ZHANG Yunbo
Abstract：The effects of different nitrogen fertilizer application amount and transplanting density on the leaf type,photosynthetic characteristic and yield of mechanical-transplanting super rice were studied with Quanliangyou 681 as material. The results showed that the interaction between the planting density and ni-trogen fertilizer significantly influenced the rate of effective leaf area,net photosynthetic rate and stomatal conductance,and did not significantly influenced the intercellular CO2 concentration. The lower planting density and nitrogen fertilizer application amount were beneficial for the increase of effective leaf area rate,lower planting density and higher fertilizer application amount were beneficial for the increase of net photosynthetic rate and stomatal conductance. The interaction between the planting density and nitrogen fertilizer significantly influenced the yield of super hybrid rice,the yield increased with the increase of the planting density and nitrogen fertilizer application amount,the treatment with high fertilizer application amount(250 kg / ha)and high density(2. 38 × 105 plants/ ha) obtained the highest yiled of 9. 26 t/ ha, which significantly higher than the other treatments. The interaction between the planting density and ni-trogen fertilizer mainly influenced the panicles number per plant and setting percentage,and panicles number per plant was crucial for high yield of mechanical-transplanting super hybrid rice,the proper in-crease of transplanting density was the approach to receive high yield under the suitable nitrogen fertilizer application amount in Jianghan Plain.
Keywords：mechanical-transplanting ricenitrogen fertilizerplanting densityyieldphotosynthetic characteristic
Publication Date：2015-04-02
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：4( 27-30 )