赤峰地区大豆连作年限的影响定位研究  

Positioning Study on Effect of Continuous Cropping Years of Soybean in Chifeng Area

作　　者：正月 李峰[1] 周学超[1] 秀梅 娜日娜[1] 赵广军[1] 丁素荣[1] ZHENG Yue;LI Feng;ZHOU Xuechao;XIU Mei;NA Rina;ZHAO Guangjun;DING Surong(Chifeng Academy of Agriculture and Animal Husbandry,Inner Mongolia Autonomous Region,Chifeng Inner Mongolia 024031;Agricultural Bureau of Balin Right Banner,Chifeng City,Inner Mongolia Autonomous Region,Balin Inner Mongolia 025150)

机构地区：[1]内蒙古自治区赤峰市农牧科学研究院,内蒙古赤峰024031 [2]内蒙古自治区赤峰市巴林右旗农业局,内蒙古巴林右旗025150

出　　处：《现代农业科技》2020年第23期10-11,16,共3页Modern Agricultural Science and Technology

摘　　要：豆科作物连作会导致生理性状的改变和产量的降低,本试验通过在多年定位的试验地块进行大豆连作种植,研究大豆连作年限对大豆生理性状和产量的影响趋势。结果表明,随着大豆连作年限的增加,产量会出现大幅度降低,最高减产幅度可达到44.43%,豆科作物连作的弊端开始显现。这是由于豆科作物在连作障碍方面的特点导致的。大豆可把空气中的氮元素聚集在根系上形成根瘤,根瘤可明显提高土壤中的氮含量,对其他作物具有促生长作用。但如果持续多年连作,会使土壤中氮元素含量过高,其他元素严重缺乏,营养元素单一造成病虫害多发,土壤微生物菌群失衡导致大豆生长环境恶劣,使大豆生理生长和生殖生长受到明显的抑制,大豆产量也随连作年限的增加而大幅下降。The continuous cropping of legumes will lead to the change of physiological properties and the decrease of yield.In this experiment,the effect of the continuous cropping years on the physiological properties and yield of soybean was studied through the continuous cropping of soybean in the experimental plot for many years.The results showed that with the increase of continuous cropping years of soybean,the yield of soybean decreased greatly,and the highest yield reduction rate reached 44.43%.The disadvantages of continuous cropping of leguminous crops began to appear,due to the characteristics of legume crops in continuous cropping obstacles.Soybean can accumulate nitrogen elements in the air on the roots to form nodules,which can significantly increase the nitrogen content in the soil and promote the growth of other crops.However,if continuous cropping for many years,the content of nitrogen in soil will be too high,other elements will be seriously deficient,the single nutrient element will cause more diseases and insect pests,the imbalance of soil microbial flora will lead to the bad growth environment of soybean,and the physiological and reproductive growth of soybean will be significantly inhibited,and the soybean yield will be greatly reduced with the increase of continuous cropping years.

关 键 词：大豆 连作 生理性状 产量 内蒙古赤峰 

分 类 号：S565.1[农业科学—作物学]