The invention discloses a film-covering and
punching planting method for a secondary
saline-alkali land in the Yellow River
irrigation district and belongs to the technical field of
saline-alkali land planting. The method comprises the steps that a land is selected; a salt-reduction isolating layer is paved; a salt-control
permeation-increase
water collection pipe is embedded; animal rotten
feces, saw timber
powder and desulphurization
gypsum powder are applied on the land surface; surface ploughing and
irrigation are conducted to the
saline-alkali land; base fertilizers are applied; trapezoid soil heaps and V-shaped grooves are trimmed; a
drip irrigation pipe is embedded;
punching and application of
soil fertility fertilizers are carried out; film covering,
sowing and
irrigation are carried out; and management of the salt-control
permeation-increase
water collection pipe, droppers and a reservoir is conducted. According to the invention, the
sowing is conducted after the film covering, and a covering film is punched, so that water-conservation,
fertilizer-conservation and temperature increase effects are better, and
crop yield increase is promoted. In addition, the
soil water holding capacity can be enhanced, soil looseness can be increased, and a soil hardening degree can be improved, so that soluble salt ions can be rapidly leached into a
plough layer, the salt ions leached into deep soil
layers are not easily delivered to the superficial-layer soil with water, salt surface accumulation can be retarded, and the
salt content can be reduced.