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我省花生连作面积较大,据调查,全省每年有三年以上连作田200多万亩,个别重点产区县(市)连作田占花生播种面积的40％以上。连作造成花生严重减产,连作一年,减产10％以上,连续三年连作,减产30％以上。为此,解决花生连作障碍,成为当前花生生产上急待解决的问题。 长期生产实践和试验研究得知,花生叶斑病和线虫病是引起花生连作障碍的原因之一。叶斑病初侵染病原菌主要分布于地表,线虫主要分布于地下20～30cm土层内,据此.我们研制了“土层翻转改良耕地法”,并对其解除花生连作障碍的效果进行了初步研究。
According to the survey, there are more than 2 million mu of cropland in the province every year for more than three years. Some key producing districts and counties (cities) even make up more than 40% of the sown area of peanuts. Continuous cropping resulted in a serious reduction of peanut production. Even for one year, the yield was reduced by more than 10%. Continuous production was continued for three years, reducing production by 30% or more. Therefore, to solve the problem of continuous cropping of peanuts has become an urgent problem to be solved in peanut production. Long-term production practices and experimental studies have shown that peanut leaf spot and nematode disease are one of the causes of peanut continuous cropping obstacles. The primary pathogens of leaf spot were mainly distributed on the surface of the earth and the nematodes were mainly distributed in the soil layer of 20 ~ 30cm underground.According to this, we developed the Soil Tillage and Improved Cultivated Land Law and carried out initial research.