Effects of Interaction between Phosphorus Nutrition and Cultivation Methods on Grain Yield and Phosphorus Utilization of Upland Rice and Paddy Rice Effects of Nitrogen Nutrition on Grain Quality in Upland Rice Zhonghan 3 and Paddy Rice Yangjing 9538 under Different Cultivation Methods Effects of Cultivation Methods on the Absorption and Use Efficiency of Phosphorus in Upland Rice and Paddy Rice Effects of Cultivation Methods on Grain Quality in Upland Rice cv. Zhonghan 3 and Paddy Rice cv. Wuxiangjing 99-8 Effects of Nitrogen Nutrition on Grain Yield of Upland Rice and Paddy Rice under Different Cultivation Methods