水性树脂包膜尿素氮素释放与冬小麦氮素吸收匹配特征

林海涛, 李彦, 刘兆辉, 沈玉文, 江丽华, 谭德水, 宋效宗, 刘苹

The Match of the Nitrogen Uptake in Winter Wheat and Nitrogen Release of Water Borne Resin Coated Urea

HaiTao LIN, Yan LI, ZhaoHui LIU, YuWen SHEN, LiHua JIANG, DeShui TAN, XiaoZong SONG, Ping LIU

表1 不同生育期不同土层土壤有效氮累积量

Table 1 Soil available nitrogen accumulation in different depth soil layer at different stages（kg·hm-2）

土层深度 Soil layer depth (cm) 处理 Treatments 苗期 Seeding stage 返青期 Regreening stage 拔节期 Jointing stage 孕穗期 Booting stage 扬花期 Flowering stage 灌浆期 Filling stage 0-30 CK 57.5±5.4c 43.9±2.9c 11.0±1.0b 56.2±6.2c 32.8±9.7b 21.8±2.9c U 161.2±9.2a 73.7±9.7b 59.7±8.5a 135.9±8.0b 55.9±5.3a 44.0±2.6b WRCU 148.5±3.5b 127.1±12.9a 69.2±11.0a 171.1±10.3a 46.1±10.9ab 85.7±9.5a 30-60 CK 37.6±2.8c 30.0±2.4b 11.3±2.9b 18.8±1.6c 15.3±7.5b 12.5±3.0b U 125.6±7.4a 93.1±10.0a 60.7±10.a 107.6±11.7b 16.4±5.4b 14.2±2.0b WRCU 93.2±6.0b 103.9±6.8a 69.0±4.2a 141.4±7.5a 32.9±7.3a 73.3±6.3a 60-90 CK 36.4±1.0b 31.2±1.2c 12.8±1.6b 15.9±1.5b 8.8±4.5b 7.0±0.6b U 42.7±4.3a 54.9±13.7b 55.9±3.0a 43.6±6.9a 7.0±2.7b 5.5±0.3b WRCU 37.7±4.7b 76.8±11.6a 63.9±11.4a 50.4±9.1a 14.3±3.5a 27.0±3.6a