The effect of trophism level and exploitation intensity on the production characteristics of grassland community dominated by Festuca arundinacea Schreb.

Plant, Soil and Environment

Knot P.:¹  Hrabě F.¹ 

关键词: grassland;    fertilization;    cutting frequency;    forage productivity;    energy inputs and outputs;   

DOI  :  

学科分类：农业科学（综合）

来源: Czech Academy of Agricultural Sciences

【 摘 要 】

In 2004–2009, a small-plot trial was conducted on permanent grassland dominated by Festuca arundinacea Schreb. on the mesohygrophytic site in order to evaluate effects of four levels of nutrition: F1 = without NPK fertilization, F2 = P30 + K60, F3 = N90 + P30 + K60, F4 = N180 + P30 + K60 kg/ha), four levels of cutting intensity (I1-4, I2-3, I3-2, early, I4-2, late cut) and their interactive influence, i.e. a total of 16 variants on the production of forage dry matter, production of crude protein (CD) and net energy of lactation (NEL) per hectare. The dominant influence of N-nutrition is documented by significant differences in forage dry matter (DM) production between the variants (with the exception of F1/F2) ranging from 4.41–4.80 to 8.44–9.83 t/ha. The effect of different exploitation level on the production is subdominant and no significant differences were found either in the production of forage DM(I1-6.41 – I2-6.59 – I3-6.97 – I4-7.50 t/ha) or in the production of nutrients. Management models to be recommended for the given type of sward with respect to the interactive influence, efficacy of forage production and quality are as follows: (a) three cuts/180 kg N + PK/ha with forage suitable for dairy cows; (b) two cuts/90 kg N + PK/ha with forage suitable for cattle breeds kept for meat.

【 授权许可】

Unknown