Research On Introduction, Nursery And Silviculture Technology Of Pinus Pinea L.

Through the introduction of Pinus pinea L. seeds, soil treatment, temperature, humidity and light regulation and management measures for breeding, wintering, fertilization technology, seedling breeding, absorption and innovation and breeding technology, make Pinus pinea L. successed in the North China Lycopodium seedling; the adaptability of Pinus pinea L. under soil moisture stress analysis, provide a scientific theoretical basis for the introduction and promotion of Minqin; and through the warm temperate zone, temperate zone, temperate oasis area of Loess Plateau and subtropical region selection and determine the appropriate transplanting afforestation, Pinus pinea L. nursery, afforestation and afforestation area Lycophyta promotion, implementation of the species in our country the localization and industrialization of seedling, forestation. The results show that:The best seed pretreatment method is that use 0.5% KMn O4 solution Soak seeds for 15 mins before the seeding, and use cold water rinse seeds for 3 to 4 times; Except for those methods,it also can be used 0.3% Fe SO4 solution Soak seeds for 20 mins before the seeding, and used cold water rinse seeds,used cold water soak seeds for 24 h and heap germination in room temperature; The soil of seedling should be used Fe SO4 to sterilize,at the same time, Fe SO4 can also be used to neutralize alkaline substances in soil. Selected river sand soil as the cultivation soil, the emergence rate, seedling emergence rate and biomass is obviously better than other types of soil; In order to growth better, the best sowing depth is 2cm; Spring and summer are more appropriate than autumn and winter for breeding seeds; Chose the flat seedling bed as the seedling bed; It is a more suitable method for Pinus pinea L. live through the winter is irrigation and bury seedling for 15 cm underground before soil frozen; The prevention and control of plant diseases,use the Fenaminosulf and Fe SO4 solution can show a good effect.The most suitable fertilization ratio about N:P:K for Pinus pinea L. seedling growth is 2:1:1 or 2:1:2;Compared to other treatments,this fertilization method is better than others. The seedling height and ground diameter growth promoting effect is the most significant, seedling height reached 24.7cm, ground diameter reached 0.54 cm.With the soil water stress, the biomass of Pinus pinea L. began to decline, the main root length increased, ratio of root and stem increased,the number of branches and roots decreased.With the aggravation of soil water stress, the growth of seedling was be inhibited. Under the different soil water stress condition, in October, plant height and ground diameter are: light soil water stress > medium soil water stress>no soil water stress> heavy soil water stress.The results showed that the curve of diumal variation in net photosynthetic rate(Pn) of the Pinus pinea L. leaves was dual-peaked with obvious midday depression of the photosynthesis efficiency. At 11 am, the net photosynthetic rate of Pinus pinea L. leaves reached a peak which is 7.9 mol CO2/m2/s,at 15 o’clock in the afternoon, the net photosynthetic rate of Pinus pinea L. leaves can also reached a peak which is 6.14 mol CO2/m2/s.In Longnan, Jingning, Yuzhong, Wuwei, Minqin five different introduction and afforestation, the Pinus pinea L. seedling growth was a great difference. Longnan afforestation seedling vigorous growth, without freezing, dieback, plant diseases and insect pests, and has a good adaptability to the local climate and ecological environment. Key words: Pinus pinea L.;seedling technology; fertilization technologysoil water stress...