Using the quadrat method, the species diversity characteristic was comparatively studied between native species and exotic species in the 6 residential green areas in Sanya city. The results showed that there were 48 plant species belonging to 22 families and 40 genus in investigated areas, including 17 native species which were belonged to 11 families and 16 genus and 31 exotic trees species which were belonged to 16 families and 28 genus. The dominant species of native species were Cocos nucifera, Ficus benjamina, Sterculia lanceolata, Winchia calophylla and Caryota ochlandra, and dominant exotic species were Spathodea campanulata, Pterocarpus indicus, Ficus religiosa, Terminalia mantaly, Delonix regia, Senna surattensis and Plumeria rubra. Richness indexs of native species were 1.2 - 1.6 and those of ex- otic species were 1.7 -5.8, Simpson indexs （D） of native species were 0. 552 6 -0. 791 5 and those of exotic species were 0. 722 1 -0. 918 4; and Shannon-Wiener indexs （H＇） of native species were 1. 256 6 - 1. 748 6 and those of exotic species were 1. 629 0 - 2. 735 3. The change trend of Shannon-Wiener index, Simpson index, richness index from large to small order was ： all of species 〉 exotic species 〉 native species. It showed that exotic species were introduced sufficiently, and the proportion of native species was less, which should be increased in the future.

          In order to study the effects of salicylic acid （SA） treatment on heat tolerance of blueberry （ Vaccinium spp. ） , two cultivars V3 and Misty of blueberry treated by 0. 1 mmol/L SA were subjected to heat stress trentment, and their physiological indexes were measured. Heat stress with 42 ℃ led to blueberry leaf yellowing and wilting, in manual climatic chamber. However, 0. 1 mmol/L SA treatment could alleviate effectively the above symptom. Proline contents declined with SA treatment compared with heat stress control （control 2）. The biggest drop occurred at 96 h, decrease of V3 and Misty were 10.47% and 30. 11%, respectively; relative electroconduetibilities declined with SA treatment compared with control 2. The biggest drop appeared at 96 h. Decrease of V3 was 22.52% , and the decrease of Misty were 18.5% at 24 h, 20.5% at 96 h. SA alleviated the damage of cell membrane integrity via decreasing the contents of Malonic dialdehyde （MDA）. The MDA of Misty decreased more significantly than that of V3 during heat stress. SA was able to stimulate the antioxidant system via increasing Superoxide dismutase （SOD） activity for improving the heat resistances of blueberry. Compared with the control, SOD activity of the two cultivars at 96 h increased more significantly than that at 24 h during heat stress. Thus, SA was able to stimulate SOD activity and regulate the osmotic balance for improving the heat resistances of blueberry, as a result of alleviating the damage of the cell membrane, decreasing the chlorophyll degradation and protecting the physiological function of the normal protein. Misty was more sensitive than V3 to heat stress and SA treatment.

        Effects of different concentration （0, 10, 20, 40, 60 and 80 g/mL） water extracts of Euca- lyptus citriodora Hook. f. leaves on root growth and some physiological indices of Vaccinium spp. seedlings were studied based on soil culture experiments. The results showed that the root activity of Vaccinium spp. increased first and then decreased with concentration of water extracts of E. citriodora leaves, and reached the peak with 20 g/mL. The root activity was significantly different but dry mass of root was insignificantly different between different concentration treatments. Low concentration （ ≤20 g/mL） water extracts significantly improved chlorophyll a, chlorophyll b and total chlorophyll of Vaccinium spp. leaves, but high concentration （ ≥ 60 g/mL） of water extracts significantly reduced those （ P 〈 0. 05 ）. High concentration （≥60 g/mL） water extracts of significantly improved relative conductivity rate and chlorophyll a/b of Vaccinium spp. leaves, but low concentration of water extracts had no significantly effect. These investigations indicated that Vaccinium spp. had a less sensitive and a certain tolerance to the water extracts of E. citriodora, but a significant inhibition of growth occurred with a higher concentration of water extracts.

        Four kinds of phenyl silicone resin with PhSiO3/2, MePhSiO2/2, and SiO4/2 unit were prepared through hydrolysis-condensation reaction, and the phenyl group content was determined by ultraviolet absorption spectrophotometry at 263 nm, and the relationship between the phenyl content and the reflective index was studied. The results showed that the reflective index of the phenyl silicone resin was mainly related with the content of phenyl group, and had little relation with the content of other groups such as methyl and vinyl group. Ignored the effect of other groups relationship between the reflective index of the phenyl silicone resin and the phenyl content agreed with the following formula： nD = 1. 419 94 ＋ 0. 021 08M （Ph）.

        By using the polyethylene oxide-polypropylene oxide-polyethylene oxide three block copolymer （P123） as the template agent, ethyl orthosilicate （TEOS） as silica source, mesoporous silica Santa Barbara Airport-15 （SBA-15） was prepared with the method of hydrothermal synthesis. The structures of the SBA-15 were systematically studied using fourier transform infrared spectroscopy （FTIR）, TGA analy- sis, DSC analysis, N2 adsorption-desorption and scanning electron microscopy （SEM）. Also adsorption kinetics and adsorption thermodynamics were investigated. The results showed that the fipronil were adsorbed by the SBA-15. At around 9 h, in the system of fipronil-ethanol solution in which initial mass concentration is 1.5 mg/mL, fipronil adsorption quality by SBA-15 come to an optimal value, about 175 mg/g, and then it is decreased to about 60 mg/g and keeps in balance between 55 mg/g and 73 mg/g. Its adsorption kinetics and thermodynamics curves could be described by pseudo second model and Freundlich equation.

            Using a simple and efficient pre-treatment methods QuEChERS （Quick, easy, cheap, effective, rugged, and safe）, the residues of 13 pesticides （chlorothalonil, triadimefon, fipronil, procymidone, endosulfan, bifenthrin, fenpropathrin, cyhalothrin, pyridaben, cyfluthrin, cypermethrin, fenval- crate and deltamethrin） in pitaya （Hylocereus undulatus Britt） were analyzed with gas chromatography-e- lection capture detector （GC-ECD） that were compared with regular extraction and solid phase extraction （SPE） purified method. The results showed that the limits of detection were in the range of 0. 009 - 0. 400 ng/g. The average adding recoveries ranged from 81.1% to 108.0% with relative standard deviation of 6.6% - 17.0%. Adding recoveries of different extraction and purification methods were close, and relative standard deviation of SPE were relatively large. The method with less organic solvents, reliable, high aceuraey and precision would be applied in the local laboratory with gas chromatography to carry out rapid detection of pesticide residues in pitaya.

        Based on uCOS-II embedded system, STM32 controller, and MEMS sensor, a two-wheeled self-balancing vehicle system composed of hardware and software was designed. The hardware system was composed of processor module, motor drive module, attitude detection module, bluetooth communication module and power-supply module. The processor module PID control of self-balancing vehicle system, and process of data fusion algorithm. The motor drive module control the motor rotation and speed. The Bluetooth communication module was adopted to achieve communication with cellular phone APP terminal. The attitude detection module was used to collect data of acceleration and angular velocity of vehicle system in real time. Hardware driver and user application consisted of the software system. The results showed that when a person stood on the balancing vehicle, it could achieve self-balancing; when the body lent forward or backward, it could go ahead or back off; when the handle deflected to the fight or left, it could achieve rightward rotation of lefthanded rotation. The self-balancing vehicle system is of good dynamic quality, simple structure, easy implementation, and has good engineering practical value.

        An improved shuffled frog leaping algorithm （SFLA） to solving constrained optimization problems was proposed. Combined with ε- differential evolution algorithm （ ε - DE） , the infeasible solutions with better objective function were made full use of in the evolution process. In the initial stage of evolution, the infeasible solutions with better objective function and near the boundary of the feasible region were incorporated in the population. With the evolutionary generation increasing, the decrease in the population constraint relax degree decreased the number of infeasible solutions in the population. Until the population constraint relax degree was 0, the population was entirely composed of feasible solutions. The convergence speed and accuracy had been greatly improved by the improved algorithm. The simulation results of 13 Benchmark functions proved that the algorithm had higher precision and stronger robustness, was a very effective algorithm to solve the constrained optimization problems.

       Based on the statistical data from 2008 to 2014 about Beijing, Shanghai, Tianjin and Guangzhou 4 Cities, per net income of farmers was regarded as explained variable, and the economic growth, fiscal expenditure on agriculture growth, urbanization rate and educational level were regarded as explanatory variables to construct the panel data model. The results showed that three variables, the economic growth, fiscal expenditure on agriculture growth and urbanization rate, had a significant positive role in promoting the per net income growth. Speeding up economic development, strengthening of fiscal expenditure on agriculture investment, promoting the new urbanization strategy should been regarded as the most important means.

       Colletotrichum is an important fungal genus, its taxonomy has been paid more attention by the mycologists. The recent research progresses on the taxonomy of the genus, including morphology, molecular phylogeny and other approaches, were reviewed in this paper. The application of physio-biochemical characterisitics, mating compatibility and secondary metabolite profiles in the identification of CoUetotrichum species was also reviewed. Finally, the future trend of taxonomic study on this genus was prospected.

        Effective microorganism （EM） has been applied widely for having complex microbial and stable effects. The current status and the action mechanism of EM applied in organic solid waste composting were reviewed, and the prospect of EM applied in organic solid waste composting was prospected in this paper.