三、试验地的田间工作(一)试验地规划与管理首先详细测量试验地的面积,土壤差异和地形,然后按照试验内容进行规划,保证各个供试品系或处理尽可能得到相对一致的条件.整地要作到深耕细耙,平整细致,耕地的方向必须与小区的方向垂直,整个试验地的耕深要相同.播种密度要均匀,深度一致,避免漏播.中耕作物的行株距要求整齐一致,播行要直.在播种前应预先划出纵行.如用播种机播种,事先要校对播种量;在更换品种时,要将播种 Third, the experimental field work (A) the pilot planning and management First of all, the test area to measure the area, soil differences and topography, and then follow the test plan to ensure that each test line or processing as much as possible to get the same conditions. Soil preparation should be deep plowing fine rake, formation and meticulous, the direction of arable land must be perpendicular to the direction of the plot, the entire experimental depth of cultivation should be the same planting density should be uniform, consistent depth to avoid leakage. Consistency, broadcast to be straight. Before planting should be pre-designated longitudinal. Such as sowing machine sowing, prior to proofreading sowing; in the replacement of species, we should sow