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我们在地处黄河三角洲的垦利县进行了万亩玉米中产变高产的综合技术开发试验。经过三年的试验,试区玉米平均单产比试验前三年亩增158.2公斤,增长73.5%。其增产的主要技术措施是:一、不断探索,更换良种。选用适宜的高质量的良种是试区玉米增产的重要关键。高质量的杂交种具有杂交优势,生长整齐、单穗大、产量高,但不同的品种其产量亦有明显的差别。我们的大量调查证明:鲁原单1号产量(424.6公斤/亩)最高,其次是鲁原单4号(产量353.6公斤/亩),最差的是鲁原三(2)号(产量307.7公斤/亩)。鲁原单1号比鲁原单4号(对照)增产70.1公斤/亩;鲁原三(2)号比鲁原单4号减产46.8公斤/亩。在惠民县鲁原三(2)号反比鲁原单4号增产11%。垦利县由于误用不合格的良种鲁原三(2)号造成减产,这就说明,选用适宜的高质量良种增产幅
We are in Kenli County, located in the Yellow River Delta mu of middle-yielding comprehensive technology development experiment. After three years of testing, the average yield of corn in the trial area increased 158.2 kilograms, up 73.5% over the previous three years. The main technical measures to increase production are: First, continue to explore and replace good seeds. The selection of suitable high-quality seeds is an important key to increase yield of corn in the trial area. High-quality hybrids have the advantage of hybridization, grow neatly, single spike large, high yield, but the yield of different varieties are also significantly different. Our extensive survey shows that the output of Luyuan 1 was the highest (424.6 kg / mu), followed by Luyuan 1 (output 353.6 kg / mu) and the worst was Luyuan 3 (2) (output 307.7 kg / mu ). Luyuan single No. 1 Lulu single 4 (control) increase of 70.1 kg / mu; Luyuan three (2) Bilu original single No. 4 production 46.8 kg / mu. In Huimin County Luyuan three (2) anti-Lu original single No. 4 11% increase. Kenli County due to misuse unqualified elite Luyuan three (2) caused by the reduction, which shows that the selection of suitable high-yielding seed increase