In order to select the superior families of Pinus kesiyavar.langbianensis with high-resin-yield, the resin-producing capacity,DBH and tree height of 42high-resin-yield families and a control(8years old) were measured and analyzed.The results showed that the resin-producing capacity of each family was higher than that of the control,and the average resin-producing capacity was 32.9%,higher than the control. The results of analysis of variance showed that the resin-producing capacity among the families had significant differences.The family heritability was 0.49.Three superior families for dual-purpose type for resin and timber were selected,and the realized-gain of resin was 70.2%.Two superior families for high-resinyield were selected,and the realized-gain of resin was 108.8%.
Library service quality means the suitability of library information services.This paper briefly introduces the progress of the research on the service quality management,makes the statistical analysis on the papers about the research on the application of the tools for service quality evaluation and on library quality management system published in the period of 1998—2008,and based on this,draws a conclusion that the research on the differences of our country's library service quality is relatively weak.
This paper puts forward a new-type hydraulic direction technology for the horizontal drilling of coal bed methane(CBM) based on the deficiencies of the original direction methods such as the inconvenient operation,the jamming of the drilling tool,or the expensive price etc..It firstly analyzes the style of hydraulic rock fragmentation,deduces the computing expressions for the hydraulic injecting nozzle and the relationship between ejecting pressure and pump output.Further,it obtains two groups of data for correction distance and pump output,attacking times,and ejecting time,which shows the compatibility between theory and practice.The feasibility using in practical production of the hydraulic direction technology,one of the increasing production technologies of CBM,is proved through by theory and practice research.It will greatly reduce the cost on rectifying the deviation of the drilling and ensure the drilling quality.
Cultivation experiment with two different methods of soil preparation( hole,strip) and four different initial planting density( 5000,2500,3334,1667 strains of hm-2) a total of eight kinds of cultivation model tests. Tests to be carried out after half a year,at the end of each year the young tree height and DHB were investigated,for 5 years,through the variance analysis of the survey results showed that strip soil preparation. planting density is 1667 strain of hm-2showed the best cultivation mode.
8 fertilization modes plus a control test were implemented in this paper. The test results showed that the 9thfertilization mode N3P3K2(250 g + 400 g urea superphosphate + 100 g potassium sulfate)should be selected for young Szemao pine plantations. As compared with on use of 9thfortilization mode the average tree height,DBH and volume(initial planting density:1 m* 2 m,2 m * 3 m) of the young plantation were separately enhanced by 29. 14% and 48. 64%,18. 1% and 23. 3%,74. 14% and106. 25%. The best fertilizing time should be generally selected in May and June.
Cuttage experiments on Sladenia celastrifolia were implemented by use of different cuttage substrates,different hormones( rooting stimulants),different cuttage time,cuttage slips of different parts. The results showed that the most suitable cuttage substrate was river sand and perlite( 4∶ 1),and the rooting rate was 84%; the rooting stimulant-GGR6 with 0. 01% concentration had the largest influence power on the rooting rate,the rooting rate reaching 96%; the most suitable cutting time was in March,the rooting rate was 91%; the optimum cuttage slips were dry germination branches,and their rooting rate was 95%, and the top branches of 1 year old were next and their rooting rate was 88%.
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