Effects Of Controlled-Release Fertilizer Application On Tea Yield, Quality And Soil Nutrient Of Tea Garden

Tea plant is one perennial economy crop which depend on its leaves, its picking object is the tender tea shoots, every year need to applicant fertilizer for much of the nourishment is token away from the soil. Shandong Tea Garden generally use the implicated method as follows:three times for the growing season and once when achieve the growing. And the fertilizer style mainly is the Available fertilizer. So the tea garden is up against with the excessive application of the fertilizer and the labor force cost high, and the excessive application of the nitrogen fertilizer, low available utilization. The study separately experiment on productive tea garden and the young tea garden. The controlled-release fertilizer specialized for tea plant (short for CRF1, the content of N-P2O5-K2O is 25-4-11 CRF2 N-P2O5-K2O20-6-14) and the common fertilizer (short for CCF, which consists of urea, compound fertilizers and ammonium bicarbonate) were applied in tea garden. The pure nitrogen of CCF is the same with the CRF1-1 and CRF2-1, while amount of CRF1-1,CRF1-2,CRF1-3 was 100%,80%,50%.Based on the systematic analysis of the content of the nourishment element, PH value, yield, increment rate, mineral content from the tea and the quality components of the tea with the soil of different treatment.. One new and suitable applicant style of the fertilizer is gotten The study result as follows:1. The application of CRF could increase the content of the nourishment element of the N, P, K remarkably, different treatment on the soil of the tea garden, PH has change rate in different degree, while CRF1-1,CRF1-2 have.0.10～0.29 higher than CCF.2. The application of CRF also could raise the yield of tea, especial the treatment CRF 1-3 has the best yield, as for CRF1-1,CRF1-2,the increment effect in spring evidently than the other season.. The scope up to 13.9-39.9%,and the CRF1-3 has the remarkable increment effect in all spring summer and autumn, the highest increment rate up to56.9%。 3. The content of the N,P,K in the tea shoots are different when application the CRF1 and the CCF in the productive tea garden, but they don't have the evident level. but combine the yield,one could get the result that the treatment of CCF has scant content of K. The treatment of CCF in spring and autumn could reduce the Tea Polyphones of the fresh leaves, reduce the TP/AA, increase the content of the Water extracts.4. The application of CRF1-1 and CRF2-1 could increase the content of the nourishment element of the N, P, K remarkably in the young tea garden. But when finish the tea season, other treatment (except the CRF2-1)have a lower content of available phosphorous, the rate up to 40-70%, and the year amount potassium in the soil of CRF1-1和CRF2-1 higher than the treatment of CCF.5. The Photosynthetic rate and One hundred bud weight of the tea on the treatment of CRF1-1,CRF2-1 and CRF1-2 evidently higher than the CCF in the young tea garden,but the treatment of CRF2-2 and CRF1-3 lower than the CCF.6. The treatment of CRF could raised the content of N,P,K of tea shoots in the young tea garden remarkably. But the content of N is only the half of the spring. The treatment of CRF1-1,CRF2-1 and CRF 1-2 can increase the content of the amino acid,reduce the ratio of tea polyphonies and free amino acids, but in every treatment, the tea polyphenol amount in autumn evidently lower than in spring and summer, and Amino Acid only has the same content with summer...