1974—1975年,我所与分布在9个县(市)的16个单位组织了油菜高产联合试验,试验田共28块,总面积54.8亩,平均单产293.3斤,其中300斤以上的田块13个。通过对28块田的初步分析,我们认为高产油菜的形态特点有以下几点:一、三熟制油菜越冬形态特点(一)叶片数:从表1可以看出,稻、稻、油三熟中油莱(下同)的 From 1974 to 1975, we organized a joint trial of high yielding rape with 16 units distributed in 9 counties (cities). The experimental area totaled 28 with a total area of ​​54.8 mu with an average yield of 293.3 kg, of which more than 300 kg A Through the preliminary analysis of 28 fields, we believe that the morphological characteristics of high yield rape include the following: First, the characteristics of overwintering morphology of three ripening rape (A) the number of leaves: As can be seen from Table 1, rice, rice, oil, three cooked In the oil Lai (the same below)