Recently the drill sowing is widely spreading in which wheat or barley is sowed along narrower furrows. It promises a good harvest and has an advantage that both seeding and reaping can be done utilizing animal power or machinery. We made an experiment on the effect of control erosion applying this method in a wind erosion area and could make the following points clear.
(1) In the case of drill sowing; the covering degree of the ground is much higher than in the case of ordinary sowing and consequently the surface of the ground is protected against wind erosion.
(2) The amount of the blown-off soil in the ordinary area was a half of that in the naked area, while in the drill sowing area it was one-third.
(3) In the naked area the erosion was 3 to 4 centimeters deep and in the ordinary area it was 0.5 to 1 centimeter deep, while in the drill sowing area no erosion was observed, and on the contrary soil was heaped up to the depth of 3 to 4 centimeters.
(4) As to the yield, it was in the proportion of 107 to 100 of that in the ordinary area.
The above-mentioned leads to conclusion that the drill sowing has a remarkable effectiveness against wind erosion and so is to be applied in wind erosion regions.