The Response To Soil Nutrient Status And Fertilization Of Blueberries

Rational fertilization is the main means to promote the growth and to improve the quality for Semen Trigonellae. This experiment adopts a systematic study on soil nutrient status in order to determine the limiting factors of soil, to establish field experiment of fertilizerprogram.Through the different ratio of N, P and K.Analyze of blueberry tree index,soil nutrient status, blueberry quality, the establishment of the quality equation to guide the blueberry fertilization. Experimental results show that :（1） The order of the size of the soil adsorption fixation capacity of blueberry is:P>K>B>Cu>Zn>Mn,the order of magnitude of soil nutrient limiting factors: Ca> P > N >K > Cu > B, Not applied Ca, P, N, K, Cu, B indicates these elements sorghum crops were cut 82.66%, 34.67%, 34.09%, 28.38%, 20.12%, 16.31%.（2） Different N、P、K have different effects on N, available P, availableK and pH of blueberry woodland.The performance of available N available P, available K showed an increasing trend with the increase of the amount of N、P、K fertilizer. With the increase of the amount of K fertilizer available K and pH decreased.the other was with the N, P, K increased first and decreased later.（3） The different N、P、K have different effects on blueberry tree high growth and crown growth, leaf greenness. Tree increased with N、P、K showed a parabola relationship;Crown width and Chlorophyll with the N rate assumes the trend of escalation, with P,K fertilizeshowed a parabola relationship.（4） The different N、P、K have different effects on blueberry fruit weight. In a certain range, with N, P, K increased the single fruit weight increased first and then decreased, and the impact is K>N>P,the interaction is NP> PK> NK, the regression analysis of blueberry fruit weight Y and N, P and Kwas N: 15.06g/strain, P: 7.69g/strain, K:37.48 g strain, fruit weight was 1.23 g.（5） Different N、P、K have different effects on blueberry fruit diameter, in a certain range, with the N increased in transverse diameter and longitudinal diameter showed a rising trend, first increased and then decreased with P and K increased, P> K> N for diameter, the interaction was NK> NP> PK. and K> N> P for long diameter, the interaction was NP> PK> NK.（6） The regression relationship betweenfertilizers and the water content is not significant.（7） Different N 、 P 、 K have effects onanthocyanin significantly. the impact was K>N>P and interaction was NK> PK> NP, the regression analysis of anthocyanin Y and N,P and Kwas N:18.34g/strain, P:15.30g/strain, K:17.51g/strain, then anthocyanin contentwas 3.25 mg/g ? FW.（8） Different fertilization onvitamin C was N> P> K,the interaction was PK> NK>NP,The theoretical maximum amount of fertilizer was N: 16.94g/strain, P: 22.5g/strain, K:21.91g/strain, the vitamin C was 90.91 mg/Kg ? FW.（9） Different fertilization onsoluble sugar was P> N> K,the interaction wasNK> NP>PK, The theoretical maximum amount of fertilizer was N:10.05g/strain, P:8.51g/strain,K:14.16 g/strain, the soluble sugar was 9.63%.（10） N₂P₂K₂ can recommend the best fertilizer amount under the present experimental conditions.