Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (18): 1-5.doi: 10.11924/j.issn.1000-6850.casb2020-0493

Special Issue: 生物技术 农业生态

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The Effects of Intercropping on the Growth, Development, Physiology and Ecology of Dryland Crops: A Review

Cui Aihua(), Liu Shuai, Bai Zhigang, Hu Qixing, Sun Julong, Shen Jiaxing, Zhang Yunxi()   

  1. Cotton Research Institute of Jiangxi Province, Jiujiang Jiangxi 332105
  • Received:2020-09-24 Revised:2021-01-18 Online:2021-06-25 Published:2021-07-13
  • Contact: Zhang Yunxi E-mail:49856861@qq.com;jxmhzyx@163.com

Abstract:

The aims of this study are to select suitable farming methods for dryland crops in the Yangtze River Basin, improve the yield and quality, obtain higher economic benefits and promote the sustainable development of dryland agriculture. The effects of intercropping on crop yield, quality, agronomic traits, ecological and photosynthetic characteristics, and nutrient uptake were reviewed both at home and abroad. The results show that the total yield (or income) of crops using an intercropping system is higher than that of any monoculture system. Intercropping significantly improves the quality of crops. Intercropping makes each crop complementary in space-time, water and fertilizer utilization. The total efficiency of radiation interception and utilization of intercropped dryland crops is not lower than that of monocultures of specific crops, and the soil water content and nutrient utilization rate of the intercropping system are higher than that of the monoculture system. Intercropping could lead the two crops to compete and improve the nutrient absorption, thus enhancing fertilizer use efficiency and reducing fertilizer loss rate. Intercropping system could use light, temperature and water intensively. Given the problems of dryland crop intercropping in the Yangtze River Basin, four research directions were pointed out.

Key words: intercropping, dryland crops, growth and development, physiological characteristics, ecological environment

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