ANALYSES TO SOME CHARACTERS OF GROWTH AND DEVELOPMENT FOR WHEATS UNDER ECOLOGICAL CONDITIONS IN LASA
小麦在拉萨生态条件下一些生育特点的分析

Ecological experiments of wheats was arranged in Lasa during 1982-1985. Liaochun 6 is a typical spring wheat, on the other hand, Taishan4 is a winter variety. Heading and maturation were postponed, so werethe growth periods and periods from sowing to maturation for wheats inLasa. The low temperature was an important influential factor. Plant he-ight of wheats was higher in Lasa, because growth periods was longer.The difference of temperature between day and night was bigger, the ni-ght temperature was lower, and the radiation of sun was stronger thanmost places in China, this contributes to the bigger weight of the seed.