Comparative Study On Shade Tolerance Of Different Green Manure

As a traditional organic fertilizer in China,Green Manure can improve soil properties and increase soil fertility.In recent years,the use of green manure has played a role in alleviating the abuse of chemical fertilizers.Planting Green Manure can improve soil,increase the nutrient elements needed for crop growth,and reduce weeds and pests.In this study,the growth of green manure under full light and shade(about 50%of full light)was determined,the shade tolerance of green manure plants was compared,the effect of shade on the growth of green manure was analyzed,and the green manure varieties with strong shade tolerance were selected,to provide more green manure varieties for inter-row interplanting of fruits and forests.The main results were as follows:(1)Under shading treatment,the chlorophyll content of 27 green manure varieties showed significant difference.With the shading effect,the chlorophyll content increased and the chlorophyll a/b value decreased,the chlorophyll a/b value of Mung Bean decreased most obviously,which was 56.58%.The biggest decrease of chlorophyll a/b was 31.01%in Tamarix Indian.Among the Sesbania cannabina Green Manure varieties,the decrease of chlorophyll a/b was the most obvious,32.05%;To sum up,the shade tolerance of the Small Bean Green Manure Variety Dahuaci Green Bean,Tamarix ramosissima green manure variety and Sesbania cannabina Green Manure Variety Yanjing Jiao 1 was the best.(2)According to the growth trend of leaves,the growth of Mung Bean and Adzuki bean was the best under shading treatment,the growth of Tamarix ramosissima was the best,the growth of Sesbania cannabina Green Manure was the best,the growth of Yanjingjiao No.1 and Sesbania cannabina in Huai’an was the best.According to the growth and development of the underground part and the aboveground part,the root-shoot ratio of Vigna angularis varieties varied from 5%to 19%,that of Tamarix ramosissima varieties from 15%to 28%,and that of Sesbania cannabina varieties from 7%to 17%,among them,Mung Bean and green manure variety,big flower leaf Mung Bean,Tamarix henanensis and Sesbania cannabina were the most affected.(3)Under shading treatment,the nitrogen content of different varieties of green manure changed significantly.The accumulation of nitrogen in Mungbean,Sophora Japonica,Adzuki bean and Adzuki bean increased from 6.50%to 36.19%,and Adzuki bean was rich under shading.Among them,the nitrogen content of Tamarix Indian was the only one that increased significantly,with an added value of 27.55%.Among Sesbania cannabina Green Manure varieties,only Tianxuan no.10 had a significant increase in nitrogen nutrition,and its nitrogen accumulation increased to 4.31%.The results showed that the Mungbean and green manure varieties red bean,Tamarix Indian and Sesbania cannabina were the best in shading treatment,and the nutrient accumulation was the most.(4)The results showed that under shading treatment,the crude fat of the seeds of the Vigna angularis cultivars increased significantly,and the rest of the green manure of the Vigna angularis cultivars decreased significantly.The yield of Adzuki Bean Variety Tongshan District Adzuki bean increased by 26.06%,while the yield of other seeds decreased.The seed yield of Tamarix henanensis increased by 10.81%,and the seed yield of other Tamarix species decreased significantly.The crude fat of Sesbania cannabina varieties Huzao Sesbania cannabina,Huazi Sesbania cannabina,Tianxuan No.10,Qingfengtian Sesbania and Yanjing Gum No.1 increased significantly,while the other varieties decreased significantly.The seed yield of Sesbania cannabina Green Manure Variety Sesbania cannabina from Huai’an increased by 2.88%,while the yield of other varieties decreased.According to the comparison of Nutrient and yield,the flower and leaf green of Sophora Japonica L.is the best.under the shading condition,the Mungbean Green Manure Variety Dahuaci Mungbean,the Tamarix Indian green manure variety,and the Sesbania cannabina Green Manure Variety Yanjingjiao 1 had the best performance and were suitable for interplanting.(5)Under the shading condition,the Mungbean Green Manure Variety Dahuaci Mungbean,the Tamarix Indian green manure variety,and the Sesbania cannabina Green Manure Variety Yanjingjiao 1 had the best performance and were suitable for interplanting.