Study On The Impact Of Increasing Soil Temperature On Competitive Relationship Between Alternanthera Philoxeroides And Different Rice Varieties

Global climate warming and the invasion of alternanthera philoxeroides can lead to rice production. Climate warming is advantageous to the biomass accumulation of alternanthera philoxeroides, so Climate warming can enhanced the ability of alternanthera philoxeroides for resource competitiveness is very large. This experiment based on the soil warming to simulate climate warming, by pot experiment,Set the soil temperature to compare and rise2℃to study the effects of soil warming to alternanthera philoxeroides and competitive relationship between alternanthera philoxeroides and different rice varieties.The experimental results show that:Soil warmingto2℃,which is beneficial to the growth of alternanthera philoxeroides.This results findings that the current global warming on Alternanthera philoxeroides has a positive effect;soil warming to2℃has a impact to Alternanthera philoxeroides with the ability of nutrient absorption.Soil warming influence on competition relationship between alternanthera philoxeroides and rice. HubeilNo、Zhong zhe you、Guang liang you and Liang you hua have a strong competitiveness,they are an impedevt to the growing of alternanthera philoxeroides. Qing you and Yue you have a weak competitiveness, which is conducive to the growing of alternanthera philoxeroides.Hubei1No、Zhong zhe you and Guang liang you are strong species,Qing you and Yue you are Vulnerable species.The soil warming have significantly positive effect on competitive between alternanthera philoxeroides and rice.The cause of the change may be related to alternanthera philoxeroides differences on nutrient absorption ability when soil warming.