Study On Nutrient Supply Characteristics And Utilization Rate Of Peanut Nitrogen,Phosphorus And Potassium In Liaoning Province

Due to the large increase in the population,the demand for food is also increasing,and agricultural production faces enormous challenges.However,the phenomenon of unreasonable fertilization in the process of pursuing high yield has become more and more serious,causing many problems such as a large amount of waste of nutrient resources and pollution of the ecological environment.Fertilizer utilization rate is an important indicator for judging the efficient use of fertilizer resources,which is of great significance for guiding recommended fertilization and improving nutrient management.This article is based on the“3414”test data of 58 test sites of peanuts in Liaoning Province from 2006 to 2010.The SPSS software was used to analyze the distribution and yield effects of crops using the distribution trend of the distribution map.Use origin to use statistical methods to analyze the agronomic efficiency of NPK nutrient parameters.The following conclusions are drawn:?1?The average yield of crops in the nitrogen-free zone was calculated to be 3500.3 kg/ha,the target yield was 4172.5 kg/ha,the yield increased ranged from 400 kg/ha to 650 kg/ha,and the yield in the non-phosphorus zone was 3289.1 kg/ha.The target yield is 3851.6 kg/ha,the yield increase range is 300kg/ha-600kg/ha;the potassium-free crop yield is 3359.3 kg/ha,the target yield is 3973.3 kg/ha,and the increase yield is 200kg/ha-650kg/ha.The average relative yield of NPK was 83.9%,85.1%,and 84.5%,indicating that the soil supply of NPK in peanut planting areas in Liaoning Province is relatively sufficient.Appropriate and reasonable application of NPK fertilizer can coordinate the balance of soil and fertilizer,and unreasonable application will lead to soil pollution.?2?The relative yield of crops,RY,is expressed as the ratio of yield,which is a measure of soil nutrient capacity.To a certain extent,relative production can exclude other factors.The average nitrogen supply of peanut soil in Liaoning Province is 120.8kg/ha,and the average nitrogen yield of the highest yield is 192.7kg/ha;the average value of soil phosphorus supply is 124.9kg/ha,and the average value of total phosphorus is the highest.It is 196.8 kg/ha;the average value of soil potassium supply is 151.0 kg/ha,and the average yield of the highest yield is 239.9 kg/ha.The essence of soil nutrient capacity is the ratio of soil nutrient content to total nutrient supply.The higher the relative amount of soil supply nutrients,the stronger the soil's ability to supply nutrients,and vice versa.The relative amount of nutrient sources,the greater the chance of being captured by the roots of the crop,the stronger the ability to provide nutrients.?3?By establishing a binary linear regression model:N:y=-2.755+0.181X₁+7.178X₂-3.659X₂²+0.127X₁X₂P:y=-2.373+0.164X₁+7.237X₂-4.494X₂²+0.157X₁X₂K:y=-2.187+0.165X₂+6.345X₂-3.901X₂²+0.157X₁Accurately simulated the variation law of peanut agronomic utilization rate in Liaoning Province,X₁?no-cropping crop yield/soil supply component?,X₂?fertilizer yield at the highest yield/soil nutrient content?,which well described the agronomic efficiency of fertilizer.Variants,the three main controlling factors affecting fertilizer utilization are:crop yields representing the nucleus-free crops;soil nutrient content representing the soil;and the highest yield of fertilizers representing the fertilizer.Two pathways of variation:one is the degree of hunger?no crop area crop yield/soil nutrient content?;the other is effectiveness?the amount of fertilization at the highest yield/soil nutrient content?.?4?According to the two variations of fertilizer agronomic efficiency,improvement measures and strategies were proposed.The improvement measures include methods for improving the effectiveness of fertilizers,methods for improving the types of fertilizers,and methods for improving the hunger level of nutrients for crops,such as raising nitrogen-efficient varieties and increasing crop planting density.The three strategies are to obtain the best Y₀/N_S,Y₀/P_S,Y₀/K_S?nitrogen-free crop yield/soil nitrogen supply,phosphorus-free crop yield/soil phosphorus supply,potassium-free crop yield/soil?Potassium supply),that is,the demand;obtain the best N_max/N_S,P_max/P_S,K_max/K_S?nitrogen application rate at the highest yield/soil nitrogen supply,phosphorus application at the highest yield/soil supply?The amount of nitrogen,the amount of potassium applied at the highest yield,or the amount of potassium supplied by the soil,that is,the optimal supply;the combination of demand and supply to achieve the best balance.The effects of hunger degree and effectiveness on the agronomic efficiency of fertilizers are independent and interrelated.Any unilateral improvement should be done in conjunction with other measures.Only by ensuring the coordination and coordination of the two can we ensure the high yield of peanuts at the same time.Efficient use of fertilizer.This paper takes the soil nutrient content as a breakthrough,reveals the nutrient content of peanut soil,soil nutrient capacity,fertilizer agronomic utilization efficiency and its variation,and provides nutrient demand management for rational fertilization of peanut planting in Liaoning Province,which is efficient for peanut fertilizer resources.The use of theoretical basis is of great significance for ensuring the sustainable high yield of peanuts and the sustainable development of farmland resources.