Effects of Fertilization Modes on Photosynthetic Characteristics and Yield of Paeonia ostii'Fengdan'
The paper aims to solve the problem affecting the quality and yield of Paeonia ostii'Fengdan'due to unscientific fertilization in the cultivation process,the five-year-old P.ostii'Fengdan'was used as test material to study the effect of the method of staged controlled fertilization on the photosynthetic characteristics and yield of P.ostii'Fengdan'.The results showed that the net photosynthetic rate,stomatal conductance,transpiration rate and chlorophyll content of P.ostii'Fengdan'leaves showed a trend of first increasing and then decreasing with the increase of compound fertilizer application and the sprayed boron fertilizer concentration,and reached the maximum value at D3B4(compound fertilizer 225 kg/hm2,boron fertilizer 0.3％)level.The trend of intercellular CO2 concentration in leaves was opposite,showing a trend of first decreasing and then increasing,reaching the lowest value at D3B4 level.At the same time,at the D3B4 level,the number of pods per plant,pod diameter,1000-grain weight,and grain yield per plant all reached the maximum value.Therefore,in this study,225 kg/hm2 of compound fertilizer base fertilizer at the full flowering stage+0.3％boron fertilizer spraying on the leaves at the initial stage of fruiting was the best fertilization mode for the high yield of P.ostii'Fengdan',which could provide a certain reference for scientific fertilization of P.ostii'Fengdan'.
NETL
NSTL
万方数据
