Woodland Peak Masson Pine Pesin-Producing Factor Research

Resin-tapping Pinus massoniana in Gaofeng Forest Farm is always at the forefront in forest industry in Guangxi. On the other hand, there is also a lot of difficulties and problems. Under such circumstance, researching the influence of resin-tapping Pinus massoniana in Gaofeng Forest Farm provides a theoretical basis and technical support. The main research results are as follows:(1) The most main factors on affecting resin yield of p.massoniana stands include diameter at breast height, stand thickness, forest stand density, altitude,temperature and pine increasing agent. The secondary factors include fertilization,the cut surface loading rate and grease cutter. The slope position and rainfall have not significant effect on resin production. Thus, tree factors and silvicultural factors have larger effect on resin production than ecological factors and artificial interferences. Managing p.massoniana stands should first consider tree factors and silviculture factors.(2)Resin yield of Pinus massoniana stands has a positive correlation with diameter at breast height. The main reason is that Pinus massoniana stands with thick DBH have more resin roads. The annual output of Pinus massoniana stand varies obviously in different diameter at breast height. When the diameter at breast height is 24cm, the annual output of Pinus massoniana stands increases about 10% adding a diameter class. Thus, it suggests the first tapping should be put off appropriately until the diameter class is 20cm.(3) Resin yield of Pinus massoniana stands has a obviously positive correlation with stand thickness. The main reason is that Pinus massoniana stands with thick bark have more resin roads. During the experiment, we found that bark color of Pinus massoniana stands also affect the output. The more red the bark is, the lower the output of Pinus massoniana stands.(4) Resin yield of Pinus massoniana stands has a obviously negative correlation with forest stand density. The average yield per mu in different forest stand density is very different. The forest stand density has affect on resin yield of Pinus massoniana stands mainly through growing space and resource allocation. Thus, forest stand density should be 55～60 per mu.(5) Slope position has no great effect on resin production. The reason is that the difference between slope positions in the study area is relatively small. On the other hand, altitude has a great impact on resin production. Between different altitudes, the impact of slope position is different. And the effect altitude has on resin production is mainly through light and temperature.(6) The average annual amount of Pinus massoniana plant lipid have a significant difference among fertilization treatment sand different fertilization treatments。By applying fertilizer measures that can improve the average yearly output of Pinus massonia-na plant fat content 18.31%, and the Resin yield increase-ed significantly. The suggestion is that Gaofeng Forest Farm farm should apply fertilizer toMasson pine timely and properly, to increase resin output.(7)The average output of Pinus massoniana stands varies clearly between different months. The resin yield of tapping tree in Pinus massoniana is positive with temperature. In the study period, the temperature is highest in July and the resin yield of tapping tree is most. While the temperature is lowest in March, so is the he resin yield of tapping tree. The average output of Pinus massoniana stands per zhu rises and then decrease with temperature. The reason is that the temperature has effect on the life of pmassoniana and that tapping is different. Thus,tapping work should be between July and August.(8)The rainfall has a certain positive correlation with resin yield of Pinus massoniana, but the effect is not so obvious. In other words, it is not that the more the rainfall is,the higher the resin yield is. The resin yield is also related with the rainfall duration, which affects root activity and photosynthesis of Pinus massoniana.(9) The average yearly output of Masson pine plant lipid content significa-ntly in different cutbetween the surface loading rate differences, oleoresin yield with the rate of loadincreases, rate of load and Masson pine resin yield per plant showed a linear positive correlation. The effection of Rate of load to Masson pine resin production is mainly produced by the resin canal number, more fragmented resin canal, more produce resin. The Suggestion on Gaofeng Forest Farm Farm mining is that increase the rate of load appropriatly when the standard conditions allowed.(10) The average yearly output of fat content in Pinus massoniana plant have an extremely remarkable difference between using Pine increasing agent or not, but the difference is very small in Resin production by two ways of using the fat liquoring agent. The use of pine increasing agent make pine yield about 50%, the effect is obvious compared to other regions, the reason may be related to genetic factors and growing conditions. The suggestion is that Gaofeng Forest Farm farm should establish scientific and reasonable way to use Pine increasing agent according to the pine increasing agent using, in order to improve the yield of pine resin in the production and operation activities.(11)The average yearly output of fat content in Pinus massoniana the type of Cut butter knife have a significant differences between Masson pine yield, Qinzhou grease cutter is adopted to improve the operation of individual amounts than the average yearly output of fat by qinzhou grease cutter 10.17% increased, fat cutter than academy of agricultural sciences。The reason for this is that fat cutter every knife cut width is different, qinzhou grease cutter amount of resin canal every knife cut more. Advice when using different cutting fat cutting fat strictly control the cut surface load rate, and reduce the qinzhou grease cutter every number of cutter, from day one knife two knife down to 3.