Effect of maize-soybean intercropping on quality of vegetable soybean
Many researches have been done on the high economic benefit, stable yield and superior seed quality of monocropping vegetable soybean. But with the arrival of the food crisis, intercropping is more and more popular. Whether vegetable soybean can maintain the excellent qualities mentioned above still...
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| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2016-09-01
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| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2016.02.031 |
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| Summary: | Many researches have been done on the high economic benefit, stable yield and superior seed quality of monocropping vegetable soybean. But with the arrival of the food crisis, intercropping is more and more popular. Whether vegetable soybean can maintain the excellent qualities mentioned above still needs more research.We explored the effects of maize-soybean strip intercropping on seed quality of vegetable soybean with field experiment. Maize (Zhenghong 505) was planted two lines in narrow row while vegetable soybean was sowed two lines in wide row at the same time (May 5th, 2015). Three vegetable soybean varieties were adapted in this experiment: Zhexiandou 4, Qingsu 5 and Shenxian 6. At the beginning of R6, samples were taken to determine the agronomic characters and nutrition quality of vegetable soybean. The seed agronomic characters include the fresh mass per 100-pod, fresh mass per 100-pod seeds, fresh mass per 100-seed mass, flat pods number per plant, one-pod number per plant, two-pod number per plant, three-pod number per plant and two-pod rate per plant. The nutrition quality contained protein, free amino acid, crude fat, soluble sugar, starch, and moisture.As the results showed, the agronomic characters of intercropping vegetable soybean decreased compared with those of monocropping, but 100-seed mass increased. The contents of protein and soluble sugar of intercropping vegetable soybean seeds were higher than those in monoculture. Moreover, the free amino acid of Zhexiandou 4, Shenxian 6 was higher than that in monoculture, but Qingsu 5 was lower. Comparing these three vegetable soybeans, we concluded that as for appearance quality Qingsu 5 was the best, and Zhexiandou 4 took the second, Shenxian 6 was poor. However, with regard to nutrition, Shenxian 6 was the best, Qingsu 5 was the last.As the interactive analysis showed, both appearance and nutrition quality of vegetable quality were mainly determined by cropping pattern. But there were some difference among different varieties. The correlation analysis suggested that fresh mass per 100-seed mass was significantly negatively correlated with crude fat, and it was the same as fresh mass per 100-seed mass and moisture. Fresh mass per 100-pod seeds was significantly positively correlated with sweet amino acid and free amino acid.In summary, when the appearance quality is good, the nutrition quality will be poor. Thus, it is necessary to coordinate appearance quality and nutrition quality. Because the appearance quality of vegetable soybean is affected by cropping pattern and the nutrition are affected by pattern and variety, we should screen out well adaptability and good quality varieties. At the same time, we must focus on techniques including line spacing, crop allocation, density, fertilization management and harvest time, so that we can achieve high quality and high yield vegetable soybean in an intercropping pattern. |
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| ISSN: | 1008-9209 2097-5155 |