The Effect Of Nitrogen Phosphorus Potassium Fertilizer Combination On The Yield And Quality Of Potato

The uniform design was used to research the effects of different NPK fertilizer combinations on the yield of potato and quality of potato. Equations were established using NPK fertilizer combinations as the decision variable, the potato yield and quality of potato as the objective function for the potato variety Youjin. The main results are as follows:(1) Agronomic characters. Nitrogen fertilizer on plant high growth and potato branch of the number increases the inhibition, but for the Lord stem diameter growth have promote role; P and k for the growth of plant height and the increase of the number of branches have promote effect, but to the Lord the stem diameter increases the inhibition; Potash Lord stem diameter and the increase of the number of branches have stimulative effect.(2) The chlorophyll content. Nitrogen, phosphorus, potassium, three factors on the influence of the potato chlorophyll content for P>K>N, P plays a main role. Three kinds of fertilizer increase with chlorophyll content are increased.(3)Production.Nitrogen. Phosphorus, potassium fertilizer comprehensive increase the yield, through to the nitrogen, phosphorus and potassium fertilizer model with output frequency analysis, potato field optimal potato fertilization scheme for:Pure N for 128.2694～128.3039 kg/hm², P₂O₅ for 81.5784～81.6051 kg/hm², K₂O for 130.4386～130.5614 kg/hm².(4)Quality.Nitrogen.phosphorus. Potassium fertilizer different potatoes have higher quality, through the influence of nitrogen, phosphorus, potassium fertilizer model with output frequency analysis, potato field optimal starch content fertilization scheme for:Pure N for 57.9504～162.6114 kg/hm², P₂O₅ for 30.5912～34.0841 kg/hm², K₂O for 191.297～204.2756 kg/hm². Potato field optimal protein content of the scheme for fertilizer:Pure N for 109.8428～114.4275 kg/hm², P₂O₅ for 81.9045～87.1171kg/hm², K₂O for 106.4927～126..3962 kg/hm²ã€‚Test results with potatoes in heilongjiang province, the regulation of fertilizer needed to guide the production practice, the area of heilongjiang province of potatoes with scientific theory on high yield and good quality.