不同施肥水平对水稻9741物质生产和冠层特性及产量的影响

以沈农9741为材料,探讨不同肥料处理对超级稻物质生产、冠层特性及对产量构成的影响。结果表明,在N2P2K3和N2P2K2处理下,都达到了超高产量。氮、磷、钾肥施用水平与穗数显著或极显著相关。在成熟期,氮肥、磷肥、钾肥施用水平与物质积累总量极显著正相关。在灌浆期,氮肥、钾肥施用水平与叶片净光合速率显著和极显著相关。氮肥、磷肥、钾肥施用水平与细胞间CO2浓度显著或极显著负相关。产量与幼穗分化期、抽穗期、成熟期叶面积指数和干物质积累总量显著或极显著相关,与透光率显著或极显著负相关。

Effect of Different Fertilizer Treatments on Matter Production, Crown Characteristics and Yield of Rice 'Shennong 9741'

This study involved utilizing Shennong 9741 as research materials to investigate the effect of several fertilizer treatments on rice（Oryza sativa L.） matter production,crown characteristics,and yield components.The result showed that super high yields can be achieved under the treatments of N2P2K3 and N2P2K2.It was also indicated that the fertilizer application rates of N,P and K exhibited significant or vary significant correlation with rice spike number.N,P,and K fertilizer application rates significant or vary significant positively correlated with total amount of substance accumulation in maturing stage.During milking stage,the fertilizer application rates of N,P and K displayed significant and vary significant correlation with net photosynthetic rate of rice leaves.Additionally,N,P and K fertilizer application rates significant or vary significant correlated with intercellular CO2 concentration was observed.LAI was measured during yield and spikelet primordial differentiation periods,heading stage,and maturing stage,respectively.It was showed that LAI significant or vary significant positively correlated with dry matter accumulation and negative correlated with light permeation rates.