江淮稻作区氮肥用量对高产优质中籼稻产量、品质及氮肥利用效率的影响

阮新民, 从夕汉, 杜弘杨, 岳伟, 施伏芝, 罗彦长, 王元垒, 罗志祥

Effects of Nitrogen Fertilizer Rates on Grain Yield, Grain Quality, and Nitrogen Use Efficiency of High-Yield and High-Quality Medium Indica Rice in the Jianghuai Rice-Growing Region

Ruan Xinmin, Cong Xihan, Du Hongyang, Yue Wei, Shi Fuzhi, Luo Yanchang, Wang Yuanlei, Luo Zhixiang

表4 施氮量对氮肥利用率的影响

Table 4 Effects of nitrogen application rates on nitrogen use efficiency

品种Variety 施氮量Nitrogen application rate NDE (kg/kg) NGE (kg/kg) NPE (kg/kg) NRE (%) NAE (kg/kg) NPPE (%) V1 N0 155.43a 93.51a － － － － N45 137.35b 81.11b 68.94a 42.44a 27.76a 66.23a N90 125.02c 75.76cd 59.65b 41.58a 19.26b 44.90b N135 121.17c 70.33c 59.28b 41.93a 24.30ab 43.54b N180 106.84d 64.31d 53.52bc 43.61a 23.00ab 38.39c N225 109.71d 61.28d 45.23c 26.88b 11.80c 24.62d N270 102.14d 54.01e 36.49d 25.88b 9.19c 20.18d V2 N0 147.40a 94.49a － － － － N45 130.22b 84.62b 72.62a 40.84a 29.52a 76.44a N90 125.61bc 81.47b 52.54b 40.53a 21.32bc 52.60b N135 125.13bc 80.82b 70.55a 33.32a 23.55ab 47.01b N180 116.24d 62.85c 44.82bc 35.15a 15.80cd 35.57c N225 111.15cd 64.46c 51.29bc 37.76a 19.38bcd 35.02c N270 103.60d 56.10d 39.83c 33.64a 13.42d 26.82d V3 N0 132.68a 71.88a － － － － N45 128.77a 67.52ab 38.41b 10.68b 3.95d 57.78a N90 113.91b 59.25b 32.68b 27.24ab 8.84c 44.73b N135 111.65b 59.81b 47.47a 35.47a 16.38a 43.30b N180 105.15b 56.30b 35.23b 20.93ab 6.79cd 30.32c N225 100.58b 54.60bc 40.28b 30.14a 12.14b 30.08c N270 85.08c 43.12c 25.42c 34.75a 8.69c 24.07d V4 N0 151.75a 95.56a － － － － N45 132.72b 80.46b 67.59ab 47.79ab 32.25bc 71.98a N90 122.26c 79.86b 69.44ab 57.07a 39.48a 65.96a N135 120.36c 78.23b 71.70a 36.79b 26.35c 56.21b N180 105.01d 69.48c 61.75b 55.61a 34.20ab 50.09b N225 104.13d 68.73c 61.19b 48.94ab 29.90bc 43.15c N270 103.70d 62.19d 51.27c 36.27b 18.61d 29.96d V5 N0 154.98a 93.93a － － － － N45 139.83b 90.97a 92.04a 35.71bc 31.00a 85.44a N90 123.92c 77.24b 56.85b 42.16ab 23.90ab 60.19b N135 118.66cd 75.12b 63.64b 46.13a 29.37a 56.59b N180 114.48cde 75.56b 64.06b 28.26bc 23.47b 45.24c N225 112.17de 70.21b 58.77b 39.78ab 23.38ab 41.53c N270 107.89e 69.20b 56.23b 30.56c 17.07b 32.62d V6 N0 150.56a 92.98a － － － － N45 135.62b 89.25a 83.97a 31.32cd 26.20a 68.40a N90 118.74c 73.50b 57.14b 40.42abc 23.07a 51.20b N135 117.61c 73.28b 60.44b 34.72bc 21.00a 45.10bc N180 110.98d 64.17c 53.05b 53.39a 28.33a 45.21bc N225 106.34d 64.58c 55.04b 45.30ab 24.97a 39.03c N270 98.46e 58.23d 36.57c 20.74d 7.61b 19.67d V7 N0 147.22a 87.84a － － － － N45 139.73a 82.36a 69.91a 24.09bc 16.95ab 63.73a N90 124.91b 75.20b 48.62c 28.51bc 13.77bc 44.96b N135 124.63b 74.86b 63.30ab 30.15b 19.08a 42.47bc N180 108.60c 68.11b 56.86bc 37.40a 21.27a 39.98c N225 107.72c 63.02c 47.88c 40.75a 19.51a 35.10d N270 107.55c 62.48c 45.39c 22.61c 10.25c 23.62e