论文部分内容阅读
在深耕细作的情况下,小麦根系主要分布在0～50厘米土层中内,而浅耕粗作情况下,分布在0～20厘米土层中内,根深才能叶茂产量多。同时深耕要注意土层的上虚下实,消灭明、暗坷拉,反复耙地消除架空现象。而小麦的播种深度以3～4厘米为宜。播种过深,小麦地中茎伸长过长,使正常情况下不伸长的分蘖节第一节以至第二节间伸长,出苗过程中消耗种子中营养物质过多,麦苗生长细弱,
In the case of intensive cultivation, the root system of wheat is mainly distributed in 0 ~ 50 cm soil layer, while the shallow tillage work, distributed in 0 ~ 20 cm soil layer, root depth to leaf yield more. At the same time deep plowing to pay attention to the soil on the virtual reality, eliminate Ming, Bu Ke, repeated rake to eliminate overhead phenomenon. The depth of the wheat planting to 3 to 4 cm is appropriate. Sowing too deep, the stem elongation of wheat in the ground too long, so that under normal circumstances does not extend the first section of the tiller section and the second internodal elongation, seedlings consumed in the process of excessive nutrients, wheat seedling growth is weak,