Application Effects of Intelligent Fertilizer Recommendation Technology in Cold Rice
In order to reduce the impact of long-term excessive use of chemical fertilizers on the soil and environment of cold rice.Intelligent fertilizer recommendation of according to the Nutrient Expert System(NE)based on yield and residual nutrients from previous season.Adopting a regional comparative experimental design with different fertilization rates,investigate the effects of different fertilization treatments on rice growth period,yield composition factors,theoretical yield,measured yield,and economic benefits,and analyze the partial factor productivity of fertilizer(PFP)under different fertilization treatments.The experimental results showed that compared with farmers used to three fertilizer(N-P2O5-K2O)application amount of 161,59,106 kg·ha-1,intelligent fertilizer recommendation(N-P2O5-K2O)application amount of 151,56,69 kg·ha-1,the reduced application amount of N,P2O5,K2O were 10,3,37 kg·ha-1.There were some differences among the development process,yield factors,the actual yield,and the variation was not obvious.The maturity stage of treatment 2 was the earliest on September 1st,two days prior to FP.The PFP of the three fertilizers were the highest on treatment 3,there were 73.98,199.49,161.91 kg·kg-1,respectively.The higher than FP of 8.86,21.78,63.00 kg·kg-1,respectively.The yield was increased of 4 treatments based on the condition of reducing fertilizer.The actual increase yield was the highest of treatment 3,the actual yield reached 11 171.67 kg·ha-1,the increasing yield of 686.73 kg·ha-1,the increasing rate of 6.5％.The order of increasing yield,PFP of 4 treatments were consistent.The yield of rice could be increased by applying bio-organic fertilizer.
cold riceNutrient Expert Systemfertilizer recommendationbio-organic fertilizeryieldpartial factor productivity of fertilizer
万方数据
维普
