Effects of Biological Organic Fertilizer on Flue-cured Tobacco Chemical Composition

Through field experiment,special biological fertilizer and cake fertilizer were applied collectively to tobacco,and chemical compositions of Wanxi flue-cured tobacco leaves were researched.The results showed that the increase of biological organic fertilizer would significantly improve soil nutrient supplying capacity.Compared with conventional fertilization,the contents of reducing sugar,total sugar and starch in different parts of tobaccos which were applied with biological organic fertilizer were closer to standards of excellent tobacco.In the treatment,the ratio of reducing sugar and nicotine in tobacco was more suitable in middle and lower parts of the plant and the contents of total N,nicotine and chlorine in tobacco were lowered,improving tobacco quality.

Effects of Organic Fertilizer on Fruit Quality and Acidified Soil Chemical Properties in Yantai Orchard

[Objective] This study aimed to investigate the improving effect of organic fertilizer on acidified soil as well as their effects on fruit quality and quantity in Yantai orchard.[Method] Plot experiment was conducted to investigate the effects of organic fertilizer on fruit yield and quality of Red Fuji and chemical properties of acidified soil.[Result] The apple yield in acidified soil applied with organic fertilizer all increased.Under the application of biological organic fertilizer,the apple yield was higher,and it was 8.92% higher than that in the control group.Under the mixed application of chemical fertilizer and biological organic fertilizer,the growth and development of apple trees were improved,and the total soluble solid(TSS) content,vitamin C(Vc) content and TSS-acid ratio in mature apples all increased.The application of organic fertilizer significantly reduced soil acidity.Compared with those in the control group,the soil p H value,organic matter content and alkali-hydrolyzable nitrogen content under the application of biological organic fertilizer were increased by 8.33%,15.10% and 30.80%,respectively.[Conclusion] The application of biological organic fertilizer could improve the yield of apple in acidified soil.

Effects of Sinochem Microbial Organic Fertilizer on Tea Plants

[Objectives]This study was conducted to explore the application effects of Sinochem microbial organic fertilizer on tea plants.[Methods]Through the experiment and demonstration of Sinochem microbial organic fertilizer,its effects on the yield and quality of tea and the physical and chemical quality of soil were explored.[Results]Compared with the conventional organic fertilizer cake fertilizer,the fertilizer could increase the weight of freshly picked bud leaves,increase the yield of tea,and thus promote the growth of tea plants.It increased the contents of chlorophyll components,amino acids and tea polyphenols,the main functional substances of tea,which was conducive to improving the internal quality of tea.It improved the physical and chemical properties of soil,and increased the contents of organic matter,alkali-hydrolyzable nitrogen and available phosphorus in tea garden soil.It also had a good effect in improving soil environmental health indexes and physical and chemical properties,and did not contain heavy metals and plant growth hormones.[Conclusions]This study provides a theoretical basis for the popularization and application of Sinochem microbial organic fertilizer.

Bioremediation of Soil Pollution in Orchard

[ Objective ] The aim was to study the bioremediation mechanism of soil pollution. [ Method ] The effects of applying biological organic fertilizers on the bioremediation of soil pollution in orchard were studid by experiment in orchard field and soil simulative experiment. [ Result] The biological organic fertilizers improved the activities of enzymes like polyphenol oxidase, urease, phosphatase, etc. in root-zone soil, promoted the passivation of heavy metals like Cd^2＋ , Pb^2＋ , Cr^3＋ , As^8＋ , etc. in root-zone soil, increased the quantities of useful active bacterium like beneficial fungi, actinomycetes, bacterium, etc. and decreased the quantities of harmful biology （like Fusarium oxysporum, Moniliophthora roreri, Ruselliniu necutrix/Helicobasidium mompa, nematode, etc. [ Conclusion] The study results provide some references for the popularization and application of biological organic fertilizers on fruit trees.

Effect of Fertilization on Tomato Bacterial Wilt Biocontrolling and Soil Health Restoration Using FAME Analysis

The effect of applying biological organic fertilizer(BOF)on bacterial wilt incidence of tomato and soil microbial community under continuous cropping was studied. The results showed that all the tomatoes were infected by bacterial wilt in the control. The infection rates of tomatoes in the treatments with un-composted BOF and decomposed BOF were 55 and 50% respectively. Fatty acid methyl esters(FAME)analysis indicated soil microbial community changed sensitively after applying BOF. Soil FAME total content, relative fungi content and ratio of fungi to bacteria were significantly increased in both BOF treatments. The soil odd-number fatty acid proportion changed after applying BOF, aC15 : 0, iC17 : 0 decreased, while cyC17 : 0 increased in soil odd-number fatty acid proportion. BOF application would strengthen soil health and disease suppression. The content of C16 : 1 11c in soil microbial community was obviously increased after decomposed BOF application. It indicated that the growth of AM fungi could be enhanced with decomposed BOF application. FAME microbial biomarkers could be used for an indicator of soil health and disease suppression. Odd-number fatty acid proportion was a sensitive indicator of the effect of applying un-composted and decomposed BOF respectively on soil health regulating.