Based on the theory of ecological crop nutrient deficiency and compensation effect. the nitrogen (N) deficiency at tillering stage and N compensation at young panicle differentiation stage in rice (Oryza sativa L. ) was selected to study. Four N treatments were treated. https://www.chiggate.com/saosin-live-from-the-garden-amphitheater-2lp-doublemint-electric-blue-color-vinyl-for-sale/