遮光处理对高原粳稻产量和物理品质的影响

Effect of Shading Treatment on Yield and Physical Qualities of Plateau Round-grained Rice

遮光处理可使高原粳稻生育期延长、分蘖力减弱、有效穗降低、穗长变短、穗粒数和产量下降,部分物理品质变劣。因此,在生产上应选择适宜品种适时播种,采用宽窄行移栽,配方施肥,适当控制氮肥施用量。

Shading leads to a longer growing period, Weaker tillering, reduction of effective ear numbers, Shorter length of ears, decrease of spike numbers and yield of plateau round-grained rice. Some physical qualities worsen. Therefore, appropriate varieties should be selected and sowed at the proper time. A transplantation of wider and narrower lines should be adopted. Fertilizer application should be based on formula. Application of nitrogen should be controlled properly.