Zhongsheng Guo
Northwestern A & F University, Yangling, China
Abstract Title: Agriculture high quality development and food safety
Biography:
Prof. Dr. Zhongsheng Guo studied sustainable use of soil resources; high quality development at the Northwestern A & F University, China. He put forward the resources use limit by plants (RULP), vegetation carrying capacity (VCC), the critical period of plant resource relationship regulation and the new theory of soil and water conservation and the method of Agriculture high quality development. Now, he is the director of Innovation China, Agriculture high quality production or industry service group
Research Interest:
Agriculture high-quality development is to take some measures or methods to make the land produce the maximum output and benefit to meet people's yearning for a better life and the needs of agricultural production and services. However, because overuse of fertilizer, overdose application of pesticide and introduction of exotic plant species or varieties, crop resources relationship has changed into an unbalanced relation, which influence the process of plant production and food safety. After a couple of years study, the results showed that the theories of Agriculture high-quality development includes the resources use limit by plants (RULP) , vegetation carrying capacity (VCC) and the critical period of plant resource relationship regulation, which includes the space resources use limit by plants (SRULP) , space vegetation carrying capacity (SVCC) and the critical period of plant space relationship regulation in soil water and soil nutrient rich regions, the soil water resources use limit by plants (SWRULP) , soil water vegetation carrying capacity (SWVCC) and the critical period of plant water relationship regulation in the water limited regions and the soil nutrient resources use limit by plants (SNRULP) , soil nutrient vegetation carrying capacity (SNVCC) and the critical period of plant nutrient relationship regulation in soil nutrient limited regions. For examples in water-limited regions, the SWRULP is the soil water resources in the maximum infiltration depth (MID) when the soil water content in every soil layer equal to wilting coefficient, expressed by the wilting coefficient of indicate plant in a plant community. SWVCC is the population or density of indicator plants in a plant community when the soil water supply is equal to soil water consumption in the root zone in given time, especially in the critical period of plant resources relationship regulation (CPPSRR), which changes with plant community type, site condition and time, plant development stage. When soil water resources in the MID is equal to the SWRULP, the plant water relation enters CPPSRR. The ending time of CPPSRR is the ineffective time of plant resources relationship regulation. We must select best plant species or varieties, take suitable initial planting density, which is equal to or more than VCC and effective measures or methods to ensure plant normal grow and get the cultivate goal. If the plant density is more than the VCC in the CPPSRR, plant resources relationship must be regulated based on VCC to get the maximum yield and benefits to realize sustainable use of soil resources and Agriculture high-quality production. As for fruit or crops, the leaf and fine fruit relation must be regulated according to the quantity of leaf when the plant density is equal to the VCC in the critical period of plant resources relationship regulation and the quality fruit. High-quality fruit is fruit that meets the needs of the market.