不同耕作方式对玉米生长发育的影响

Study on Corn Growth and Different Cultivation Way

不同耕作方式对玉米生长发育及产量影响的研究表明：不同耕作方式对玉米生长发育有显著影响。免耕覆盖、传统耕作、免耕留茬比耕翻覆膜出苗时间有所延缓，其中免耕覆盖最明显，比耕翻覆膜晚7～8天。播种后30天，免耕覆盖比传统耕作的株高平均低4．7cm，叶片数平均少2．6片；播种后55天，传统耕作的株高比免耕覆盖的平均高出28．8cm，叶片数平均多1．9片。不同耕作方式的玉米在各个生育时期的干物质积累量也存在明显不同。免耕覆盖对作物生长发育、干物质积累、产量影响。

Shows to the maize growth and research of output influence through different cultivation way to originally test different cultivation ways have conspicuous effects on maize growth. It is plough cover, traditional cultivation. It is leave stubble overturn membrane ploughing,emerge time delay to some extent to plough to exempt to exempt among them ,overturn membrane 7 -8 days late ploughing.30 days after seeding avoid ploughing and cover higher than one of traditional cultivation and lower by on average4.7cm, the blade counts and lacks on average 2.6 slices; 55 days after seeding, traditional of cultivation high to plough exempting28.8cm, the blade counts more on average 1.9 slices. Different cultivation ways bear to do material person who accumulate store in obviously different period in each.