典型红壤不同形态氮素迁移对长期施肥制度的响应

申凤敏,姜桂英,张玉军,刘芳,刘世亮,柳开楼

Response of Different Forms of Nitrogen Migration in Typical Red Soil to Long-Term Different Fertilization Systems

FengMin SHEN,GuiYing JIANG,YuJun ZHANG,Fang LIU,ShiLiang LIU,KaiLou LIU

表4 不同处理早、晚稻稻谷和稻草氮含量及氮吸收量

Table 4 N contents and accumulation in grain and straw of early and late rice under different treatments

处理 Treatment 氮含量 N content (g·kg-1) 氮吸收量 N accumulation (kg·hm-2) 稻谷Grain 稻草Straw 稻谷Grain 稻草Straw 植株 Total 早稻 Early rice CK 10.44b 4.22a 22.11d 10.83d 32.94d NPK 11.22b 4.69a 38.82c 19.66b 58.48c NPKS 13.87a 4.29a 46.70b 17.09c 63.79b NPKSM 13.61a 4.42a 61.71a 23.71a 85.42a 晚稻 Late rice CK 11.33a 3.83b 41.61c 17.05c 58.67c NPK 10.09a 4.44a 41.17c 21.96b 63.13bc NPKS 11.43a 4.37a 47.28b 21.38b 68.66b NPKSM 11.79a 4.48a 59.38a 26.71a 86.09a