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我们于1958年就试验成功了旱板田免耕种植油菜的方法,又经最近两年试验,1980—1981年度示范232亩,其中验收21.3亩,平均亩产161.3斤,比犁田、挖田整地的每亩(亩产101斤)增产60.3斤。增产原因据我县1954—1980年的气象资料统计,其中有18年是秋冬干旱,土地耕不动,锄头挖不烂,即使犁出来,土块很大,打不碎。种下去的油菜往往严重缺苗,一般缺苗5—10％,高者达25％,而板田油
In 1958, we successfully tested the method of no-tillage rape cultivation on dry-land plots. After the last two years of experimentation, Demonstration was conducted in 1980-1981 with a total area of 232 mu, of which 21.3 mu was checked and the average per-mu yield was 161.3 kg, The acreage per acre (yield 101 kg) increased 60.3 kg. The reason for the increase According to the meteorological data of 1954-1980 in our county, there are 18 years of drought in autumn and winter. The land is not plowed and the hoe is not dug. Even if it is plowed out, the clods will not be broken. Rape often rape seedlings missing, 5-10% of the general lack of seedlings, the highest of 25%, while the oil field