The Bangong Lake-Nujiang River metallogenic belt is located between the Qiangtang Block and Lhasa Block, and the Duolong ore concentration area is located in the western section of the Bangong Lake-Nujiang River metal...The Bangong Lake-Nujiang River metallogenic belt is located between the Qiangtang Block and Lhasa Block, and the Duolong ore concentration area is located in the western section of the Bangong Lake-Nujiang River metallogenic belt. Till now, several large and super large copper-gold deposits, such as Duobuza, Bolong, Dibaonamugang, Naruo and Rongna deposits have been discovered in this area, mainly porphyry copper-gold ones.展开更多
Fusarium head blight caused by Fusarium graminearum is one of the most serious diseases in wheat production worldwide, which seriously affects the yield and quality of wheat. Wheat grains carrying the pathogen are poi...Fusarium head blight caused by Fusarium graminearum is one of the most serious diseases in wheat production worldwide, which seriously affects the yield and quality of wheat. Wheat grains carrying the pathogen are poisonous to human and livestock health. With the long-term use of single chemical pesticide, the drug-resistance of F. graminearum is increasing day by day, and mixed agent is one of the effective strategies to improve the efficacy and delay the resistance. The mycelial growth rate method was used to determine the inhibition rates of phenamacril, tebuconazole and their mixtures(1∶1, 1∶3, 1∶5, 1∶7, 3∶1, 5∶1 and 7∶1). The synergistic coefficient(SR) was calculated by Wadley method, and the combined action types of the two agents were evaluated. The results showed that the EC_(50) of tebuconazole was 0.418 28 mg/L, and that of phenamacril was 0.489 8 mg/L; the optimum mixture ratio of phenamacril and tebuconazole was 1 ∶1, with the EC_(50) value of 0.053 74 and the synergistic coefficient of 4.2696, and the control effect of mixed agent was significantly better than that of single agent. It is feasible to control Fusarium head blight by mixing phenamacril and tebuconazole, providing a theoretical basis for development of new compound agents and effective control of Fusarium head blight.展开更多
基金granted by the Geological Survey Program of China Geological Survey (Grant No.1212011086074 and 12120113036500)
文摘The Bangong Lake-Nujiang River metallogenic belt is located between the Qiangtang Block and Lhasa Block, and the Duolong ore concentration area is located in the western section of the Bangong Lake-Nujiang River metallogenic belt. Till now, several large and super large copper-gold deposits, such as Duobuza, Bolong, Dibaonamugang, Naruo and Rongna deposits have been discovered in this area, mainly porphyry copper-gold ones.
基金Supported by Open Project Program of Engineering Research Center of Ecology and Agricultural Use of Wetland,the Ministry of Education(KF201802)
文摘Fusarium head blight caused by Fusarium graminearum is one of the most serious diseases in wheat production worldwide, which seriously affects the yield and quality of wheat. Wheat grains carrying the pathogen are poisonous to human and livestock health. With the long-term use of single chemical pesticide, the drug-resistance of F. graminearum is increasing day by day, and mixed agent is one of the effective strategies to improve the efficacy and delay the resistance. The mycelial growth rate method was used to determine the inhibition rates of phenamacril, tebuconazole and their mixtures(1∶1, 1∶3, 1∶5, 1∶7, 3∶1, 5∶1 and 7∶1). The synergistic coefficient(SR) was calculated by Wadley method, and the combined action types of the two agents were evaluated. The results showed that the EC_(50) of tebuconazole was 0.418 28 mg/L, and that of phenamacril was 0.489 8 mg/L; the optimum mixture ratio of phenamacril and tebuconazole was 1 ∶1, with the EC_(50) value of 0.053 74 and the synergistic coefficient of 4.2696, and the control effect of mixed agent was significantly better than that of single agent. It is feasible to control Fusarium head blight by mixing phenamacril and tebuconazole, providing a theoretical basis for development of new compound agents and effective control of Fusarium head blight.
基金National Key R&D Program of China“Integrated study and demonstration of chemical fertilizer and pesticide reduction techniques for winter wheat in the Yangtze River Basin”(2018YFD0200506)National Natural Science Foundation of China“Fine Mapping of Stripe Rust Resistance Gene YrBai in adult plant of wheat cultivar Baidatou”(31501620).
