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1试验目的随着农业生产技术的迅速发展，地膜覆盖技术得到了越来越广泛的应用，并用取得了显著的增产增收作用。今年我团首次在春小麦上应用地膜，其意在于探讨地膜与露地小麦生长发育动态与产量的差异，为提高小麦产量，大面积应用该项新技术提供科学依据。2试验材料与方法2．
A test purposes With the rapid development of agricultural production technology, plastic film mulching technology has been more widely used, and used to obtain a significant increase in yield and income. This year, for the first time, our group applied mulch on spring wheat. The purpose of this study is to explore the differences in the growth and development of mulched and open wheat and provide a scientific basis for the application of this new technology in a large area. 2 test materials and methods 2.