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10年来,农业科技含量日益提高,我市水稻生产从1986年理论亩产479kg,发展到90年代最高理论亩产542kg,增幅1.3成多。但年度间产量差异大,为实现“九五”期间粮食单产增一成,必须探索高产更高产栽培途径,总结历史,明确主攻点,配套新技术,实现单产新突破。1前10年水稻群体走势 从表(1)、(2)、(3)前10年苗情、叶龄、穗粒结构汇总情况看,较有规律的趋势是:基本苗从多趋少,最高1988年13.68万,到1995降至10.13万,减少26％;够苗期比较接近,幅度在7月6日～11日,以
In the past 10 years, the content of agricultural science and technology has been increasing day by day. The rice production in our city increased from 479 kg per mu in theory in 1986 to 542 kg per acre per mu in theory in the 1990s, an increase of 1.3 percent. However, there is a big difference in output between the years. In order to achieve a 10% increase in grain yield during the Ninth Five-year Plan period, we must explore ways of producing more and yielding higher-yielding crops. We should sum up history, specify the main points and provide new breakthroughs in new yields. The trend of rice population in the first 10 years From the summary of the situation of seedling, leaf age and grain structure in the first 10 years of Table (1), (2) and (3), the more regular trends are: Up to 138,600 in 1988, down to 101,300 in 1995, a decrease of 26%; enough seedling period is relatively close, the range of July 6 to 11, with