104
L. Łab˛ edzki et al.
Fig. 5.3 Planned area (thous. ha) of arable land (1) and permanent grassland (2) with equipment
for reconstruction or modernization (acc. to [17])
Table 5.5 The degree of
balancing of valley water and
melioration systems (SWM)
(acc. to [14])
Degree of balancing
Balance index WZ
Very small with a predominance of
melioration system SM
>2
Small with a predominance of
melioration system SM
1.2–2
Satisfactory
0.8–1.2
Small with a predominance of water
system SW
0.5–0.8
Very small with a predominance of
water system SW
<0.5
and Wielkopolskie provinces seems to be different. Water systems are in deficiency
in relation to melioration systems. In these cases, the development of water systems
ought to be accelerated eventually.
5.4.2 Irrigation Problems
Potentially high demand for irrigation concerns a large area of Poland in the form of
the final agro-technical operation, that permits to increase crop yields and guarantee