| Echium vulgare L.is an annual herb of the genus Bochginaceae Echium introduced from the Netherlands.The economic benefit of the Echium plant is very high.Echium seed oil can be directly used as a cosmetic raw material;Echium plant obtained from the seedling can be sold as a flower;Echium can also produce a series of bee products such as honey,propolis,royal jelly and pollen.The income,while taking in the leaves of Echium,can treat colds,coughs,inflammations,pains and other diseases,and can be harvested,processed and sold as herbs.The experiment was carried out according to the plant type and plant height characteristics of Echium and sunflower.The effects of different density treatments on the production of Echium were systematically studied from the photosynthesis characteristics and yield of the plants,in order to better improve the economic benefits of the blue dragonfly plant.To provide a theoretical basis for large scale planting and intercropping system Echium the next step.The experiment was carried out in the experimental field of Jilin Agricultural University in May 2017.The seed of the new year was selected from the previous year,and six treatments were set up,namely Echium: sunflower 2:2,2:4,2:6;sunflower: Echium 2:2,2:4,2:6,set 3 repetitions,and Echium and sunflower blank controls were planted on both sides of each treatment.The effects of different intercropping systems on agronomic traits,photosynthetic characteristics,physiological characteristics,yield and quality of Echium plants were studied.The main results are as follows:1.In the agronomic traits of the Echium plant: the ratio of the row spacing of the Echium to the sunflower is 6:2,which is more favorable for the branching of the blue dragonfly.The ratio of the row spacing of the Echium to the sunflower is 4:2.And the flowering period and flower quantity are more favorable,that is,the Echium plant in the treatment of the Echium and sunflower intercropping ratio of 4:2 is more suitable for cultivating ornamental flowers.2.In terms of photosynthetic characteristics of Echium: the ratio of Echium to sunflower was 4:2 compared with single sapling,and there were significant differences in Pn,Gs,Ci and Tr of cymbidium.,Pn,Gs and Tr are significantly higher than the single Echium,and Ci is significantly lower than the single Echium.The soluble sugar content of the intercropping system was almost the same,and the maximum value of each of them was in the mature stage,and the Echium and sunflower ridge.The difference between the ratio of 4:2 and other treatments was significant(P<0.05).3.In physiological traits: when the ratio of ridges is 4:2,the MDA content of plants is the lowest in the whole growth period,which indicates that the leaf membrane damage of Lancang is the lowest,which is conducive to high yield of Echium.4.Echium rice yield and quality: The five different intercropping treatments in this study have significant effects on the crude fat content of cypress,and the most influential one is the treatment of the ratio of Echium and sunflower to 4:2.There were significant differences between several different intercropping treatments(P<0.01).5.Correlation analysis between the intercropping system and the Echium index showed that the plant height of the intercropping system was significantly negatively correlated with malondialdehyde(P<0.05),and positively correlated with crude fat(P<0.05).There was a significant negative correlation between yield and flower yield per plant(P<0.05),and crude fat was significantly positively correlated with soluble sugar(P<0.05).The Echium indicators in different treatments showed differences,indicating the difference in the effects of different intercropping systems of Echiumand sunflower on Echium. |
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