关键词: 农业立法, 农业立法, 评估, 意义, 制度构想

Abstract: sing the 11 stations spring the frozen earth depth material of Qilian mountainous area, analyzed the frozen earth depth space and time change characteristic, and the brief elaboration has analyzed the space and time change influence factor;And taken Zhangye and the Wuwei as the western and eastern part of Qilian mountainous area’s representative's spring wheat development period for example, analyzed the spring frozen earth depth to the Qilian mountainous area spring wheat development period East-West section influence difference.The result indicated that, the deepest appears in Qilian, take this as the center, to the north, northwest, southeast the direction assumes gradually reduces the tendency, Wu Qiaoling appears a great value center; Spring the frozen earth depth presents along with the time variation obviously reduces the tendency, reduces mainly appeared after 1985, 1961-1984 annual variation scopes are small, this and spring obvious warming time interval basic synchronization.The frozen earth depth spring wheat's development period influence effect is spring remarkable to the east of Qilian mountainous area, affected spring wheat's sowing seeds successively, emerged, three, the jointing, the booting, the earing as well as mature, the frozen earth depth increased, then the development period retarded, retarded the speed is 0.5-2.4d/10cm; However, the frozen earth depth is not spring remarkable to the western spring wheat's influence, only to emerges has certain influence with three leaves.