Articles

Determining the Amount of Permissible Organic Compound Fertilization for the Purple Soil Based on the Physiological-biochemical Characteristics of Maize Seedlings

  • ZHAO Li;;HE Yuxiao;PENG Hui;LIU Gangcai
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  • 1. Key Laboratory of Moumtain Hazards and Earth Surface Process, Chinese Academy of Sciences, Institute of Mountain; Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Conservancy, Chengdu 610041, China;2. School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, Sichuan Province, China;3. University of Chinese Academy of Science, Beijing 100049, China;4. Institute of Resources and Environment He'nan Polytechnic University, Jiaozuo 454000, Henan Province, China;5. Research Institute of Tropical Eco-agricutural Science, Yunnan Academy of Agricultural Science, Yuanmou 651300, Yunan Province, China

Received date: 2012-06-12

  Revised date: 2012-08-08

  Online published: 2012-10-08

Abstract

The tolerable amount of organic compound fertilization for the corn on purple soil is determined by studying the physiological and biochemical features of maize based on the principle of chlorophyll fluorescence kinetics and photosynthesis. The physiological and biochemical indexes include plant height, leaf area, photosynthetic rate, and chlorophyll fluorescence of leaf. Results show that the plant height, leaf area index, stomata conductance, net photosynthetic rate, intercellular CO2 concentration, transpiration rate, and maximum PSII photochemical quantum yield (Fv/Fm) are increased with the increase of the amount of fertilization. It is found that the fertilization amount ranged from 0.75 t/hm2 to 1.49t/hm2 (N-P2O5-K2O=0.128-0.128-0.128—0.253-0.235-0.235t/hm2) is able to make a large leaf area, good growth performance, photosynthetic rate, and relatively high yield of corn and also make maize growing in the course of nature to maintain its normal photosynthesis. Therefore, the fertilization amount ranged from 0.75 t/hm2 to 1.49t/hm2 (N-P2O5-K2O=0.128-0.128-0.128—0.253-0.235-0.235t/hm2)is the tolerable fertilization amount.

Cite this article

ZHAO Li;;HE Yuxiao;PENG Hui;LIU Gangcai . Determining the Amount of Permissible Organic Compound Fertilization for the Purple Soil Based on the Physiological-biochemical Characteristics of Maize Seedlings[J]. Science & Technology Review, 2012 , 30(28-29) : 82 -88 . DOI: 10.3981/j.issn.1000-7857.2012.2829.014

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