Filter & Application Experiment Of Poplar Which Is In The Breed Of Rapid-growing And Anti-solt And Anti-alkali In Xiaohu Serious

Populus simonii × p. euphratica × P. sp series poplars derived from some rapidly growing poplar's compound crossbreeding after overcoming sterility in remote hybridization. Populus simonii x p. euphratica x P. sp series endure salt and alkali. The behaved evidence predominace. Compared with local Qun zhong poplar, especially small poplar Zi ran 101 growing 18 year, which tree height chest diameter, average individual plant volume are separately 11.17 meters, 17.26 centimeters and 0.1321 stere through research on salt and alkali soil. They have quite highter ecology and economy benefit, which they are separately 123.18%, 141.92% and 238.46% of the local fitting Qun zhong poplar before escaping from salt. From the beginning of 2000 year, rapid growing resistant salt and alkali Nol poplar's (small poplar Zi ran 101) introduction experiment was carried out on Da qing salt and alkali area. Breeding experiment was set up on Nol nursery in Da qing city. Many point experiment were on three different area, which were separately Da tong region Hong qi forestry center in Da qing city, nursery in Anda, nursery in Zhao zhou county. Growth quantity was compared through adopting the Xiao hei poplar, Hei lin No1 poplar as comparison trees. We looked into Liao hu resistant salt and alkali Nol poplar's shape character, substance season and growth rhythm. Growth quantity in tree height of Liao hu No1 poplar wan 111%-134.5% of Xiao hei poplar, and 97.2%-116% of Hei lin Nol poplar, and its chest diameter growth quantity was 95.6%-128.6% of Xiao hei poplar and 87.5%-128.6% of Hei lin Nol poplar. Photosynthesis net productivity was mensurated for three root two stem Liao yu resistant salt Nol poplar and comparison variety by semi-leaf method. The result showed that Liao yu resistant Nol poplars net photosynthesis net productivity was the highest on unit area. The plant didn't suffer frozen injury through culture experiment observing. So it was thought holding stronger ability of fighting a cold. By conductance ratio method mensurated ability of fighting a cold of Liao yu resistant salt Nol poplar. The result showed that its ability was equal to Xiao hei poplar. Resistant salt and alkali ecperiment was carried out with nine different grads sodium chloride and sodium carbonate solution. The result showed that Liao yu resistant Nol poplars is better than that of Xiao hei poplar and Hei lin poplar. Using disease and insect pest index measuring, which showed harm degree of disease and insect pest, Liao yu resistant Nol poplars resisted ash spot disease and lightly infected poplar rust disease, whose index was 25 and was lower than Hei lin Nol poplar which was 53.3, and higher Xiao hei poplar 16.7.White poplar appear wing miller, poplar stem shape shell harmed Liao yu resistant Nol poplar, but lighter than comparison and harm ratio smaller than 1.1%, and showed stronger ablity of resistant disease and insect. Using inserting as the mostly propagate method, inserting experiment showed that they had stronger ablity of rootage, and surviving ratio was higher than 90%. As a whole, Liao yu resistant Nol poplar could grow on the area with mean air temperature 3.2 upwards, precipitation quantity 440 millimeter or so, accumulate temperature 2300C, terminal low temperature 37C hereinafter, containing salt quantity within 0.5%. Liao yu resistant Nol poplar was distinctness better than comparison variety in major predominance character.