Abstract:

To increase crop yield, farmers' income and utilization efficiency of newly-cultivated land, the authors carried out fertilization experiments in Hedong District of Linyi City in Shandong Province from 2018 to 2020 by integrating soil testing for formulated fertilization, organic fertilizer application, controlled-release fertilization and straw returning. The results showed that the soil nutrient content with different fertilization measures increased in varying degrees in 2020, and the largest increasing rate was found under organic fertilizer application and straw returning. And compared with conventional fertilization, soil testing for formulated fertilization, organic fertilizer application and straw returning all had higher yield and income. However, considering the cost of organic fertilizer application and straw returning, the combination of formulated fertilization with straw returning is the best for improving the nutrient content of newly-cultivated land and increasing farmers' income.

Key words: fertilization measures, newly-cultivated land, nutrient change, crop yield, soil testing for formulated fertilization, straw returning