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.
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