论文部分内容阅读
我们地区过去是采用刨窝播种麦田套种玉米。这种方法有缺点:一是刨窝时由于人踩、镢伤,易使小麦受到机械损伤,一般高产田常因此每亩减产10—20斤;二是穴播的套种玉米不易保全苗,加之收麦时人踩、镢伤,缺苗断垄严重,一般缺株率10—20%,多的达30%。1979年,我区推广麦垄开沟条播夏玉米,效果较好,1980年仅泰安县的推广面积就达33万亩,占夏玉米面积的55%,缺株率降到5—10%,全县平均单产650斤,较上年增产45斤。沟播不但可避免缺苗
In the past, we used sowing and sowing of intercrop corn in wheat fields. This method has shortcomings: First, when planing nest due to human foot trauma, easy to make wheat by mechanical damage, the general high-yielding so often yield 10-20 kg per mu; second is the sowing of intercropping corn is not easy to protect seedlings, combined with income Wheat, when people step on, bruises, lack of seedlings severely damaged, the general lack of plant rate of 10-20%, up to 30% more. In 1979, the district promoted wheat-trenching trenching and sowing summer maize, and the effect was better. In 1980, only the promotion area of Tai’an County reached 33 million mu, accounting for 55% of summer maize area, and the rate of abortion dropped to 5-10% The county average yield 650 kg, 45 kg more than the previous year. Furrow sowing can not only avoid lack of seedlings