Response of Crop Root Morphology to Fertilization Measures

doi:10.11924/j.issn.1000-6850.casb20190600351

Abstract

Abstract:

The paper aims to effectively use limited fertilizer resources and provide a theoretical basis for the selection of high-efficiency crop varieties to further maximize crop economic benefits and minimize environmental pollution. We summarized a series of root morphological changes resulted from crops adapting to different fertilization conditions, and analyzed the influences of different fertilization treatments on crop root morphological indexes. The main results were as follows: (1) the root system of plants generally had the phenomenon of “low promotion and high inhibition” with the increase of element level; (2) reducing and optimizing fertilizer could promote the development and establishment of crop roots; (3) too high and too low elements inhibited the root growth; (4) organic fertilizer could make up for the single nutrient in chemical fertilizer and unbalanced fertilizer supply, and could promote the growth and development of roots combined with chemical fertilizer. Crops can adapt to different fertilizer treatments through the adaptive change of root morphology, so as to enhance the absorption of nutrient elements in soil and improve the utilization rate of fertilizer by changing morphological development.

Key words: root morphology, nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, organic fertilizer, root biomass

CLC Number:

S184

Wang Ning, Li Jiguang, Lou Yilai, Wang Yidong, Li Zhongfang, Song Jiqing, Zhang Xiaojun. Response of Crop Root Morphology to Fertilization Measures[J]. Chinese Agricultural Science Bulletin, 2020, 36(3): 53-58.

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