Photocatalyst biocatalyst—acquired the International Gold Medal of the First World Agricultural Achievements Expo in 1999. On December 30 of the same year, it passed the scientific and technological achievements appraisal of the Ministry of Agriculture (99 Nongke Guo Jianzi No.180), and.......

Jidan 255 is a corn hybrid variety selected and selected by the Jilin Academy of Agricultural Sciences for corn research. In 2000, it was approved by the National Crop Variety Approval Committee. Characteristics The spring sown period of this species in Gongzhuling City, Jilin Province was 124.......

The internal temperature and humidity and other environmental conditions of the greenhouse, which are different from bare soil, provide favorable conditions for the occurrence of certain diseases and insect pests. Among them, gray mold is the most typical, and there is a tendency to increase y.......

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In order to conduct scientific feeding and management of Tibetan mastiffs, appropriate feeding and management should be conducted during different biological periods. From the time of birth to weaning, the Tibetan mastiff is called the Tibetan mastiff. The correct feeding and management at thi.......