按小麦丰收计划要求,亩产应达到303公斤。研究表明:小麦亩产350公斤的结构是亩穗数18—22万、穗粒数38—42粒、千粒重43—48克。为达此目标,应贯彻以下关键技术。一、排水防涝,降低土壤湿度江油小麦下湿田面积大,粘、湿是限制高产的主要障碍。这类田在水稻散籽时要开沟排水,水稻收后开十字淘,播种前开好背沟、中沟、边沟和厢沟。二、选用良种,适期播种坝区、丘区二台以下田土选用绵阳20、19、11号,丘区二台土以 According to the requirements of wheat harvest plan, mu should reach 303 kilograms. The research shows that the structure of 350 kilograms per mu of wheat is 18-22 thousand mu per ear, 38-42 grains per spike and 43-48 grams per thousand. To achieve this goal, the following key technologies should be implemented. First, the drainage waterlogging, reducing soil moisture Jiangyou wheat wetland area, sticky, wet is the main obstacle to limiting high yield. This type of field when the rice seed to ditch ditch drainage, rice after harvest open cross Amoy, sowing back before the ditch, ditch, ditches and ditches. Second, the selection of elite, sowing the appropriate period, the following two plots of mound selection Mianyang 20,19,11, the mound of two soil