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当土壤含水量在1.22～2.7％时,三棱草球茎的93％因脱水失去生命力。针对这一弱点,我们于1979年对977亩三棱草为害较大的地进行麦后两次耕翻曝晒,秋翻后至来年春冻垡,播种前用无壁犁浅耕晒土十天,持续晒冻土时间250天左右,结果三棱草危害大大减少。上段水稻三棱草占总面积的73％,采用耕晒冻垡措施,82年同期下降到8.6％。而另一地号的684亩水稻,上年留板茬未伏晒冻垡,该地号80年6月24日稻田三棱草占总面积的11.6％,
When the soil water content is between 1.22 and 2.7%, 93% of the bulbheads lose their vitality due to dehydration. In response to this weakness, we in 1979 on the 977 acres of Prunella greater harm to wheat after two days of tilting, after the turn of the year Spring Festival frozen Zan, before sowing with no plow shallow tillage soil for ten days , Continuous sunning soil time of about 250 days, the results significantly reduce the risk of Sanxiancao. The upper row of Sanxian rice accounted for 73% of the total area, the use of tillage and freezing measures, the same period in 82 fell to 8.6%. While another number of 684 acres of rice, the last year left the plate stubble in the sun was not frozen, the number of June 24, 1980 Tribulus terrestrial rice fields accounted for 11.6% of the total area,