拔节前补灌追氮对小麦叶片干物质积累量和产量的影响

赵永满, 李瑞奇, 王红光

Effects of Supplemental Irrigation and Nitrogen Topdressing before Jointing on Leaf Dry Matter Accumulation and Yield of Wheat

Zhao Yongman, Li Ruiqi, Wang Hongguang

表1 不同追氮时期和灌水量处理的冬小麦叶片SPAD值

Table 1 Leaf SPAD value in winter wheat under different topdressing nitrogen periods and irrigation amounts

处理 Treatment 花后天数Days after flowering (d) 0 10 20 28 L4 L5 L6 L4 L5 L6 L4 L5 L6 L4 L5 L6 M1T2 57.66a 63.07a 63.61a 52.37a 57.93a 58.95a 45.26a 55.29a 57.73a 38.7ab 51.84a 55.58ab M1T3 56.01a 62.22a 61.83a 52.41a 59.77a 60.67a 44.28a 53.68a 57.88a 41.01a 52.77a 57.37a M1T4 58.97a 63.53a 61.17a 52.69a 60.32a 59.23a 45.68a 52.85a 57.83a 39.44a 52.00a 56.39a CK 54.80b 62.08a 61.50a 47.51b 57.91a 59.33a 43.64a 53.14a 55.28b 36.33b 51.18a 53.82b M2T2 58.12a 60.93a 60.60a 53.58a 57.67a 58.47a 44.32a 53.08a 56.08a 41.24a 51.35a 50.61b M2T3 57.58a 62.69a 60.79a 53.83a 59.44a 59.22a 45.32a 54.08a 56.08a 39.07ab 51.85a 52.21ab M2T4 59.74a 60.69a 59.17a 53.79a 56.36a 57.03a 44.65a 53.04a 55.84a 40.74a 50.62a 50.36b CK 54.80b 62.08a 61.50a 47.51b 57.91a 59.33a 43.64a 53.14a 55.28a 36.33b 51.18a 53.82a M3T2 59.02a 62.69a 61.35a 54.16a 60.15a 60.06a 45.91a 52.83a 56.37ab 41.06a 50.16a 55.06ab M3T3 58.69a 63.26a 63.53a 54.55a 61.06a 61.07a 44.41a 52.93a 56.48ab 40.37a 51.82a 55.57ab M3T4 60.69a 62.26a 62.70a 54.73a 61.36a 61.38a 44.42a 54.39a 57.81a 39.90ab 49.29a 57.02a CK 54.80b 62.08a 61.50a 47.51b 57.91b 59.33a 43.64a 53.14a 55.28b 36.33b 51.18a 53.82b