Growth Performance And Response To P In Different Provenances

In this paper, Xanthoceras sorbifolia Bunge as material, a field experiment, chemical analysis met hods of dataanalysis, combination, seedling rate, the first second years of growth, growth, photosynthes is, P stress responseindex of different provenances of Xanthoceras sorbifolia Bunge in Qixian nursery.The results of the study show that:(1) among different provenances of Xanthoceras sorbifolia B unge seedgermination rate and germination rate significantly, the best for Wu Zhong, the worst is Hebe i Baoding. (2) different provenances of Xanthoceras sorbifolia Bunge first year height growth was the biggest in Wu Zhong’s seed, the smallest for the Baoding variety; growth of ground diameter and Wu Zhong’s seed, the smallest of Baoding, Wu Zhong and Yangling in the first year of seed growth showe d a better trend, and Jixian and Baoding varieties in thefirst year of growth. Significant correlation of Xanthoceras sorbifolia Bunge Seed Germination and growth of the first year of seed weight. (3) differe nt provenances of Xanthoceras sorbifolia Bunge seed second years of growth and the first annual gro wth ranking changed significantly, and the growth of Xanthoceras sorbifolia Bunge seed for second ye ars with no obvious correlation between the seed germination rate and the influence of environmental factors on different provenances of Xanthoceras sorbifolia Bunge seed of second years of growth is m ore and more obvious, and the impact of growth gene of Xanthoceras sorbifolia seed second years occ upy a secondary position. (4) of different provenances of Xanthoceras sorbifolia Bunge second years o fnet photosynthesis rate is still a significant difference, but the transpiration rate, intercellular CO2 co ncentration and stomatal conductance ofdifferent sex was not significant. The net photosynthetic rat e was the highest in Wu Zhong’s seed, the lowest Yangling varieties. (5) in the early growth of Xantho ceras sorbifolia P has no obvious effect on the stress of Xanthoceras sorbifolia Bunge growth, but with the growth into the medium, growth in the soil P of Xanthoceras sorbifolia becomes more and more important, P deficiency will influence the growth of Xanthoceras sorbifoliaseedlings.