寒地黑土农区紫花苜蓿生产与品质对施肥和刈割频次的响应及效益分析

巩皓,杨柳,李丹丹,刘国富,肖知新,吴清莹,崔国文

Response of Alfalfa Production and Quality to Fertilization and Cutting Frequency and Benefit Analysis in Mollisol Agricultural Area in Cold Region

GONG Hao,YANG Liu,LI DanDan,LIU GuoFu,XIAO ZhiXin,WU QingYing,CUI GuoWen

表2 不同刈割频次紫花苜蓿的营养物质含量

Table 2 Nutrient content of alfalfa with different cutting frequency (Mean±SD)

处理 Traetment 刈割频次 Frequency 粗蛋白 CP 中性洗涤纤维NDF 酸性洗涤纤维ADF 钙 Ca 粗脂肪 EE 粗灰分 Ash CK 3-1 15.70±0.16a 40.46±0.43a 27.44±0.27a 1.96±0.11b 2.71±0.25b 9.25±0.27a 施肥Fertilizer 16.09±0.52a 36.12±0.36b 23.12±0.19b 2.26±0.09a 4.15±0.09a 9.63±0.44a CK 3-2 21.56±0.28b 39.73±0.31a 26.43±0.61a 1.44±0.03a 3.20±0.23b 9.53±0.38b 施肥Fertilizer 23.25±0.06a 37.60±0.56b 22.98±0.87b 1.46±0.02a 4.09±0.12a 10.53±0.38a CK 3-3 23.20±0.49b 37.78±0.47a 24.96±0.90a 1.30±0.01a 3.78±0.15b 9.72±0.4b 施肥Fertilizer 25.70±0.27a 34.19±0.27b 22.19±0.42b 1.34±0.18a 4.39±0.19a 10.43±0.28a CK 4-1 17.82±0.13b 34.17±0.18a 23.77±0.31a 2.04±0.03b 3.12±0.29b 9.50±0.29b 施肥Fertilizer 18.58±0.22a 31.85±0.32b 20.74±0.20b 2.17±0.02a 4.27±0.23a 10.17±0.12a CK 4-2 19.46±0.17b 40.16±0.85a 25.41±0.41a 1.98±0.06b 3.70±0.10a 10.19±0.06b 施肥Fertilizer 21.23±0.17a 38.49±0.33a 24.72±0.22a 2.15±0.06a 3.98±0.27a 10.75±0.38a CK 4-3 20.40±0..43b 41.18±0.36a 26.12±0.70a 1.57±0.03b 4.05±0.55b 9.84±0.33a 施肥Fertilizer 22.57±0.46a 36.66±0.52b 23.68±0.07b 1.72±0.06a 4.52±0.18a 10.00±0.09a CK 4-4 24.07±0.15b 35.12±0.53a 22.96±0.56a 1.40±0.01b 3.58±0.24b 10.01±0.02a 施肥Fertilizer 26.39±0.40a 30.40±0.37b 20.17±0.69b 1.65±0.02a 4.96±0.57a 10.86±0.34a