New EU Subsidy rules good for Gliding?

Have just seen on the news that the EU is changing the farming subsidy rules
from next year, to try and reduce the food mountain I would guess. Now they
are going to pay the subsidy regardless of the farmer actually growing
anything with the subsidy being based on an average of x past years subsidy.
At present the farmer is encouraged to grow unprofitable crops eg

Cost to grow £125 per acre
Revenue £110
Subsidy £90
Profit £75

In future they will be given the £90 regardless so growing the crop will
only result in a loss of £15 per acre.

I have been pondering how so many fallow fields will affect us and in
principal I think it should be good for us providing the grass doesnt grow
too tall.