| This paper takes the red pepper of haihuahong as the research object,designing 14 different N,P and K test treatments and 5 different organic-inorganic ratio test treatments to be carried out in Wenchang City,Hainan,in December 2016 and November 2016 for a period of 5 months.The field experiment was conducted at the flowering,fruiting,and final ripening stages to study the characteristics of the accumulation and distribution of dry matter and nutrients in leaves,stems,fruits,roots,and the effects of different treatments on the yield and quality of peppers.In order to understand the characteristics of dry matter accumulation and nutrient distribution at different stages of pepper growth during different fertilization treatments,a reasonable fertilization plan for high quality and high yield of pepper was formulated.1.The dry matter accumulation(g/strain)at the flowering stage of different pepper plants was N2P3K(54.39)>N2P2K2(52.79)>N2P2K3(52.74)>N2P2K1(52.7)>N3P2K2(51.44)>N2P1K1(49.22)>N1P2K1(49.03)>N1P1K2(48.36)>N2P1K2(47.33)>N1P2K2(43.52)>N2P0K2(40.18)>N2P2K0(37.09)>N0P2K2(23.44)>N0P0K0(19.15);dry matter accumulation(g/strain)of pepper in Shengguo period size N1P2K1(127.93)>N2P2K3(114.39)>N3P2K2(114.27)>N2P2K2(105.23)>N2P2K1(103.88)>N2P3K2(99.26)>N2P1K2(99.08)>N1P1K2(96.94)>N2P2K0(87.17)>N2P0K2(86.56)>N1P2K2(78.00)>N2P1K1(61.63)>N0P2K2(39.53)>N0P0K0(33.31);final ripening of dry matter accumulation(g/strain)size N2P3K2(156.47)>N2P1K2(141.26)>N1P1K2(138.98)>N3P2K2(137.67)>N1P2K1(130.30)>N2P2K2(124.36)>N2P2K3(122.78)>N2P1K1(113.30)>N2P0K2(110.90)>N2P2K1(107.74)>N1P2K2(100.74)>N2P2K0(55.6)>N0P2K2(42.58)>N0P0K0(29.24);Dry matter accumulation of pepper plants reached its maximum during the whole maturation stage,and the accumulation of dry matter in fruits reached its maximum during the full fruit period;The proportion of stem material distribution is the largest,and the proportion of fruit distribution is higher than that of flowering and final maturation at full fruit period.2.In the flowering stage,the lowest nutrient accumulation was N0P0K0.Nitrogen,phosphorus,potassium,calcium,and magnesium were 2.07,0.20,1.49,0.65,and 0.22 g per strain,iron and zinc were 23.13 and 1.02 mg per strain,respectively,and the highest manganese nutrient accumulation amount was 8.17 mg per plant of N2PIK 1.The treatment was 15.22%higher than that of N2P2K2 treatment,and the difference was not significant.The treatment with the highest accumulation of copper nutrients was N2P1K2,and the N2P1K2 treatment was 1.68%higher than the N2P2K2 treatment.The difference was not significant.The lowest accumulation of all nutrients in the fruit period was the same as NOPOKO treatment.The highest nutrient accumulation of nitrogen and potassium was N3P2K2 treatment in fruit period,and the highest phosphorus,iron,copper and zinc nutrient accumulation was N1P2K1 treatment.The highest calcium and magnesium nutrient accumulation was N2P2K0 treatment,and the highest manganese nutrient accumulation was N2P2K1.Treatment;the lowest maturity of all nutrient accumulation is the same NOPOKO treatment,the ultimate maturation period of nitrogen,phosphorus,calcium,copper and zinc nutrient accumulation is the highest N2P3K2 treatment,potassium,iron nutrient accumulation is the highest for N3P2K2 treatment,magnesium The highest nutrient accumulation was N2P2K3 treatment,and the highest nutrient accumulation was N2P1K1 treatment.The nutrient accumulation of N,P,K,Ca,and Mg in the process of pepper growth first rose and then decreased.The accumulation of iron and copper nutrients decreased first and then rose,while the manganese and zinc rose continuously,and the fruit nitrogen,phosphorus,potassium,calcium,The accumulation of nutrients in magnesium,copper and zinc reached the maximum in the fruit period,and the accumulation of iron and manganese nutrients reached the maximum in the maturation period.3.NPK fertilization treatment Pepper yield showed N2P1K1>N1P1K2>N2P3K2>N1P2K2>N2P0K2>N2P1K2>N2P2K1>N2P2K3>N2P2K2>N1P2K1>N3P2K2>N2P2K0>N0P2K2>NOPOKO,N2P1K1 had the highest yield of 41.28 t/hm2.The lowest yield was NOPOKO treatment,and the N2P1K1 treatment yield was 27.53 t/hm2 higher than NOPOKO treatment.According to the high yield,it was found that for each 1000 kg of pepper produced,the amount of nitrogen,phosphorus,and potassium needed to be absorbed was 5.87 kg,1.03 kg,and 3.85 kg,NPK fertilizer dosage ratio N:P2O5:K2O=1:0.18:0.66.The content of reducing Vc in N2P1K2 pepper was the highest,N2P3K2 had the highest content of soluble sugar,and NOPOKO had the lowest content of reducing Vc and soluble sugar.4.Tests of inorganic fertilizers replaced by organic fertilizers showed that 0.7M treatment had the highest yield,and NPK treatment had the lowest yield;reducing Vc and soluble sugar content showed 1M>0.7M>0.5M>0.3M>NPK,ie,the proportion of organic fertilizer replacement As it increases,the content of reducing Vc and soluble sugar gradually increases. |
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