1978年,我们在灵武农场四队17号地头年小麦苜蓿茬地上划出四块田,共11.5亩,用免耕法栽培水稻。水稻成熟后经多点测定实打(共10个点,每点面积0.05亩),免耕法的水稻亩产750～960斤,平均860斤。相邻同等条件下不用免耕法的650～850斤,平均738.3斤,免耕法水稻每亩增产16.48％。 In 1978, we plotted four fields of alfalfa stubble on the 17th year of the fourth team of Lingwu Farm, a total area of ​​11.5 mu, and cultivated rice with no-till cultivation. After ripe rice, it was tested by multi-point determination (10 points in total, with an area of ​​0.05 mu per point). The no-tillage rice yield was 750-960 kg, an average of 860 kg. No adjacent tillage under the same conditions without 650 ~ 850 kg, an average of 738.3 kg, no-tillage rice yield 16.48% per mu.