Promoting Soil Properties And Growth Soil Properties In Blueberry With Different Improvement Measures

In this study, a lield experiment was conducted to investigate the effects of different improvement measures(organic materials and microbial fertilizer) on growth and soil properties in highbush blueberries ‘Bluecrop’(Vaccinium corymbosum L., Blueberry). First of all, soil nutrient status of blueberry production area was surveyed in Jiaodong Peninsula. The application of furfural residue and monosodium glutmate wastewater on the soil improvement and growth of blueberry were examined with the indoor incubation experiments and the pot experiments. Four plant growth-promoting rhizobacteria(PGPR) named L15, L13, L90 and L106 were screened from blueberry rhizosphere soil. A pot experiment was conducted to evaluate the effect of different PGPR inoculation on the soil nutrient and microbial properties in blueberry rhizosphere. The effect of microbial fertilizer on microbiological properties and soil fertility in Blueberry rhizophere soil was evaluated. The effect of microbial fertilizer on the photosynthetic physiological characteristics and quality in Blueberry was evaluated. The main findings of the study are as folliows:1. Samples in the range of blueberry growing suitable pH accounted for only 20% of overall sample. The soil organic matter content of all samples is much lower than the growth of blueberry. And the soil nutrient status had many differences in different planting base with high coefficient of variation. Therefore, some measures must be taken to improve the soil pH, soil nutrient status, etc.2. The pH and EC decreased in 65 d after inputting sulphur. The amelioration effects of furfural residue on the acidity soil from blueberry were fittest at levels of 1.0~1.5kg/m3. Furfural residue could partly replace peat, improve soil nutrient status, enhance soil catalase activity, and promote growth of blueberry plants.3. Monosodium glutamate wastewater could significantly increase EC, improve soil base saturation, and enhance soil exchange properties. The effection of reducing pH wasn’t obvious with monosodium glutamate wastewater. It could produce stress injury to blueberry. But it could significantly improve the soil nutrient, root activity, and enhance the activity of antioxidant enzymes.4. L13 had beneficial effects on the soil nutrient and microbial properties in the blueberry rhizosphere, which exhibited broad application prospects. Microbiological fertilizer, which was mainly to Bacillus fusiformis L13, could significantly increase soil activity and soil fertility, significantly enhance photosynthetic properties antioxidant enzyme activity, and significantly improve the quality of Blueberry. And application of biological organic fertilizer was the best improvement, followed by liquid microbial agent.