A TechnoGIN-based analysis of nutrient coefficients on fruit crops
Wang Guang-huo · Guoshu xuebao · 2006
Based on the analysis of nutrient coefficient in the fruit orchards by TechnoGIN in Pujiang county, we have set up five land units and six technology levels. The analysis revealed that: firstly, fruit crops have different demanding level to N/P/K at different technology level in different land unit; secondly, the quantity of the leaching and the vaporization by the fruit trees could be calculated by using TechnoGIN, which were different at different technology levels in various land unit. Fruit crops need more N, provided the yield will be high. N is more needed than the quantity of leaching and vaporization by the fruit trees; thirdly, the nutrient quantity that fruit crop needed at technology level of TEF was close to the traditional used amount in the orchards. Fourthly, expert appraisal is very good in evaluating agricultural environmental infection.