December 10，The Land Construction Research Institute invites Professor Zhang Haihan from Xi'an University of Architecture and Technology、Professor Li Qinfang of Chang'an University gave knowledge lectures entitled "Environmental Microbial Population and Pollution Remediation Technology" and "Farmland Quality Evaluation" in the Chanba Soil Organic Reconstruction Core Experimental Area。

Professor Zhang Haihan introduced in detail the DNA diagnosis and repair technology of microbial populations in water/sediment，As well as plant root endophytic fungi and contaminated soil remediation technology。Professor Li Qinfang systematically introduced the relevant knowledge of land evaluation and cultivated land quality evaluation。After the meeting，Two professors had on-site communication with the participants，Participants said that this report has important guiding significance for the group to carry out research and development of new materials such as microbial dafabet loginpreparations and improve the quality of newly added cultivated land。

This lecture will be broadcast live on the Internet，Geographical Construction Research Institute、Northwest Branch、Huanghe Branch、More than 60 people from Yan’an branch attended。

(Writers: Wang Jiawei, Niu Yan)