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土默特右旗农业局、科委1981年从区外引种山黧豆(Lathyrus sativus),并同时进行了与向日葵(Helianthus annuus)田间套种的试验,发现山黧豆根系结瘤丰富,有较强的固氮能力,能增加土壤肥力,并促进向日葵增产.为了进一步研究山黧豆向日葵套种的增产效果和山黧豆增进土壤氮肥的程度,我们于1985年在该旗对山黧豆向日葵套
The Tumotech Agricultural Bureau and the CST introduced Lathyrus sativus from outside the area in 1981 and experimented with field interplanting with Helianthus annuus at the same time. Strong ability to fix nitrogen, can increase soil fertility, and to promote the yield of sunflower.In order to further study the yield of sunflower sunflower intercropping and shandelin increase the degree of soil nitrogen, in 1985,