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1 施肥和刈割频次对紫花苜蓿生长和产草量的影响

Table 1 Effects of fertilizing and cutting frequency on growth and yield of alfalfa (Mean±SD)

处理 Treatment 刈割频次 Frequency 自然高度 Natural height (cm) 垂直高度 Vertical height (cm) 茎叶比 Stem/leaf ratio 干草产量 Dry yield (kg·hm-2) CK 3-1 73.11±0.36b 76.17±0.47b 1.23±0.03a 3998.15±32.08b 施肥 Fertilizer ilizer 76.74±1.58a 82.06±2.15a 1.21±0.18a 4627.7±33.33a CK 3-2 54.91±1.60b 61.59±2.17b 1.16±0.03a 3897.22±80.08b 施肥 Fertilizer 62.86±0.86a 72.25±1.68a 1.03±0.17b 4125± 54.65a CK 3-3 42.41±0.49b 55.06±4.02b 1.04±0.01a 2879.63±66.74b 施肥 Fertilizer 51.41±0.9a 66.35±0.88a 0.78±0.05b 3181.48±35.72a CK 4-1 68.19±0.36b 72.54±0.59b 1.29±0.11a 3826.67±113.11b 施肥 Fertilizer 72.53±1.58a 79.00±0.95a 1.22±0.03b 4157.41±66.28a CK 4-2 65.72±0.61b 73.58±1.30b 1.19±0.01a 4205.56±19.25b 施肥 Fertilizer 72.97±0.07a 79.97±0.94a 1.10±0.01b 4618.52± 47.25a CK 4-3 60.56±0.85b 75.04±0.38b 1.15±0.01a 2740.74±48.54b 施肥 Fertilizer 65.00±0.54a 79.88±1.82a 1.08±0.02b 3038.89±38.89a CK 4-4 40.93±1.03b 45.03±1.36b 0.79±0.06a 1379.63±21.03b 施肥 Fertilizer 47.81±1.31a 51.12±0.67a 0.68±0.03b 1729.63±44.91a