The Relations Between Phenophase And Environmental Conditions And Organic Nutrition In Pistachio

We took the Pistachio in the orchards of Gangu and Xingtai as the research object and recorded data by using artificial method and automatic weather station, so we investigated the phenophase of Pistachio and meteorological factors in the two orchards. Then we focused on the changes of leaf area in branch and length of branch to analyse the relation between phenophase and meteorological factors; also we measured the dynamic changes if Pistachio's organic nutrition in 2008 and analyse the relation combated with phenophase; at last , we found out some influencing factors on pollen viability in Pistachio during florescence. The results shows as follow:(1) The phenophase of Pistachio is probably 200d, the phenophase of Kerman is consistent with Peters, but they have different florescence. Meteorological conditions affect the phenophase of Pistachio especially the temperature condition. Compared with original area, our country must pay attention to the overwintering and winter protection if making cultivation measures, and also do not neglect the disease under hot and humid environment in some place.(2) We can conclude from organic nutrition dynamic changes of xyIem and phloem in Pistachio that, thecritical period of Pistachio's phenophase have the phenomenon of transport, and synthesize, storage and utilize. This can be important reference for fertilizing scientifically and rationally.(3) Meteorological conditions have some influences to the organic nutrition dynamic changes ofPistachio especially the temperature condition. Regulate meteorological conditions artificially to improve its nutrition metabolism.(4) Suitable temperature have great influence on pollen viability during florescence, and the best is 25℃.Other conditions such as the concentration of boric acid, that 100mg/L is good for the pollen's germinating and growth but no avail if it excess; lower concentration of phytohormone have positive role for pollen viability; the pollen of Pistachio can be storaged in long and short terms. Freezing the pollen in ice chest can be a short term method in practical production, but ultra low temperature storage is suitable if it is used in a long time.