biological cycle

Studies on the stand net productivity and biological cycle of nutrient elements in the 29 year old plantations of Chinese fir on different rotations

不同栽杉代数29年生杉木林净生产力及营养元素生物循环的研究

Five differences between the Chinese agriculture and the western agriculture in agricultural ideas, resource conditions, agricultural technology system, type of operation, biological cycle and so on were discussed.

论述了中西方农业在农学思想、资源条件、农业技术体系、经营方式、生物循环等五方面的差异。

Health food is characterized by biological cycle adjustment, disease prevention, health improvement, which is food of important health function for human physiology.

保健食品是具有与生物防御、生物节律调整、防止疾病、恢复健康等有关的功能因素，经设计加工，对生物体有明显调整功能的食品。

The concentration characteristics of mineral elements and biological cycle in the terrestrial solonchak plants on the beach of Jiangsu Province

江苏海岸带陆生盐土植物矿质元素含量的特点及生物循环

Advances in research on biological cycle of Se and active se-containing substances

硒的生物循环及含硒活性物质研究进展

Accumulation and biological cycle of nitrogen and phosphorus in Pinus taiwanensis community in Wuyi Mountains

福建武夷山黄山松群落的氮、磷累积和循环

Research on Biological Cycle of Nutrient Elements in Plantation of Rubber Intercropped with Amomum Longiligulare

橡胶与砂仁间作复合生态系统营养元素循环的研究