青冈县耕地地力评价与玉米区域配方施肥

为了更加科学合理地进行玉米配方施肥,通过耕地地力调查,依据耕地地力评价标准,将青冈县耕地划分成4个等级.同时按其评价等级、≥10℃活动积温和玉米产量,并结合"3414"试验基础数据,将青冈县耕地划分成高产田施肥区、较高产田施肥区、中产田施肥区和低产田施肥区4个施肥区域,进而做出与其相对应的适合玉米种植的推荐施肥量,即高...

Evaluation on Farmland Capacity and Maize Regional Formula Fertilizer in Qinggang County

In order to conduct formula fertilizer in maize more scientifically and reasonably,the farmland in Qinggang county was divided into four grades by farmland capacity survey according to the evaluation criteria.Meanwhile,based on the grades,≥10℃ activity accumulated temperature and maize yield,combining with the basic data of ＂3414＂,the farmland in Qinggang county was divided into four fertilizer area and then the correspondence recommend application were put forward.Namely,the recommend application in high-yield area was pure nitrogen 168.6 kg·hm-2,P2O5,72.3 kg·hm-2,K2O 35.1 kg·hm-2,in relatively high-yield area was pure nitrogen 155.6 kg·hm-2,P2O5 73.0 kg·hm-2,K2O 36.9 kg·hm-2;in the middle-yield area was pure nitrogen 150.6 kg·hm-2,P2O5 63.2 kg·hm-2,K2O 38.9 kg·hm-2,and in low-yield area was pure nitrogen 110.0 kg·hm-2,P2O5 53.4 kg·hm-2,K2O 35.3 kg·hm-2.