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4 施肥和刈割频次对紫花苜蓿生长双因素方差分析

Table 4 Two-way ANOVA on the effects of fertilizing and cutting frequency on the growth and yield of alfalfa

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) 施肥Fertilizer <0.001*** <0.001*** <0.001*** <0.001*** 刈割频次Cutting frequency 0.004** 0.417ns 0.209 ns <0.001*** 施肥×刈割频次Fertilizer×cutting frequency 0.162ns 0.047* 0.046* 0.008**