The changes in pH value, soil enzyme activity and microbe density in the rhizosphere of potted rice plants fed by rice brown planthoppers (BPH), Nilaparvata lugens for different days were investigated on BPHsusceptible rice variety (TN1) and two resistant varieties (IR26 and IR36), for comparing the BPHfeedingassociated underground ecological systems among rice resistant varieties.The rhizosphere soil pH value of TN1 plants was significantly lower than that of BPHfree plants without significant deference among resistant varieties one day and five days after BPH feeding. The activities of sucrase and urease in rhizosphere did not differ among treatments one day after BPH feeding, while sucrase activity significantly increased and urease activity reduced in IR36 plant soil nine day after BPH feeding as compared with that in the BPHfree plant rhizosphere soil. The soil bacterial density in rhizosphere of IR36 significantly reduced only one day of BPH feeding, and fungal density in the rhizosphere of TN1 significantly reduced five days after BPH feeding, the soil actinomycete density in the rhizosphere of IR26 and IR36 significantly reduced. Multifactor analysis of variance showed that rice variety did not affect pH value and microbe population of rhizosphere soil and greatly affected the soil enzyme activity. Moreover, BPH feeding and feeding duration significantly affected pH value, soil enzyme activity and microbe density in the rhizosphere.
SU Ting1, XU Hongxing2 , HAN Hailiang1, YANG Yajun2 , WANG Guiyue1,*, ZHENG Xusong2, LV Zhongxian2,*
. Soilmicrobe Quantities and Enzyme Activities in Rhizosphere of Different Rice Varieties Fed by Brown Planthoppers[J]. Chinese Journal OF Rice Science, 2014
, 28(3)
: 322
-326
.
DOI: 10.3969/j.issn.1001-7216.2014.03.012
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