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山东省1981年小麦总产量为170亿斤左右,1985年增至280亿斤左右。4年来小麦年总产量增加100多亿斤,平均每年递增13%。近几年小麦产量迅速提高的主要原因是。播种面积大,物质投入多;栽培水平提高的结果。现将近年来的增产因素粗略分析如下: 增产原因一、播种面积大1981—1982年,由于山东省棉田面积迅速增大,又没有找到相应的套种措施,结果使麦田面积压缩到5,200万亩左右。1983年麦田面积开始回升,特别是近两年由于推广各种方式的麦棉、麦粮一年两熟制,而且棉田面积也略有减少,小麦实际播种面积已经超过6,000万亩,比七十年代全省年平均播种面积增加400万亩左右。如按平均亩产481斤计算,总计可增产19.2亿斤。亦即增加面积这一因素,约占总增产量的18%左右。二、投入物质多1984年比1980年全省实物化肥总销量增加130多万吨,而且尿素、复合肥等优质化肥比例也有增加。据调查,化肥总销量中的60%用于麦田,即1984年比1980年全省麦田化肥总量增加78万吨,平均每亩麦田施用化肥155斤。特别是磷肥用量
In 1981, the total output of wheat in Shandong Province was about 17 billion kilos, increasing to 28 billion kilos in 1985. In the past four years, the total output of wheat has increased by over 100 billion catties, an average increase of 13% annually. The main reason for the rapid increase in wheat production in recent years is. Sowing area, material inputs and more; the result of raising the level of cultivation. The reason for the increase in production is as follows: The reason for the increase in production One, sowing area 1981-1982, due to the rapid increase in the area of cotton fields in Shandong Province, but also did not find the appropriate intercropping measures, the result of the crop area was compressed to 52 million mu. In 1983, the area of wheat fields started to pick up. Especially in the past two years, due to the promotion of various kinds of wheat and wheat, wheat grains are cooked twice a year, and the area of cotton fields also decreased slightly. The actual sown area of wheat has exceeded 60 million mu, The province’s average annual planted area increased by 400 mu. For example, according to the average yield of 481 kg, a total of 1.92 billion kg can be increased. This factor increases the area, accounting for about 18% of total output. Second, the input of materials In 1984, the province’s total sales of physical fertilizers increased by over 1.3 million tons in 1980, and the proportion of high-quality fertilizers such as urea and compound fertilizers also increased. According to the survey, 60% of the total sales of fertilizers are used in wheat fields, that is, the total amount of chemical fertilizer in wheat fields increased by 780,000 tons in 1984 and that of chemical fertilizers in average 155 kg per mu in wheat fields in 1984. In particular, the amount of phosphate fertilizer