论文部分内容阅读
我市杂交粳稻在前两年试种示范的基础上。今年推广种植三十一万亩,占全市水田面积的18.6%。所用组合是黎明A×C57,约占80%,其余为丰锦 A×C57。今年的自然条件,对于杂交稻还是不种的,除春季严重缺水外,在气温和日照时数方面,均较常年低。据大洼气象资料统计,今年在水稻生育期间,四到九月的正积温或大于10℃的活动积温值,分别较常年减少94℃和113.8℃,都居于近廿五年来低温年次的第五位。不过,从今年温度减少数值的月份分布分析,其中四月份约占50%左右,而这段期间由于薄膜复盖保
On the basis of trial demonstration of hybrid japonica rice in our city in the previous two years. This year to promote the planting of 310000 acres, accounting for 18.6% of the city’s paddy fields. The combination used is Dawn A × C57, accounting for about 80%, the rest being Feng Jin A × C57. This year’s natural conditions are still not species-specific for hybrid rice. In addition to severe water shortages in spring, both the temperature and sunshine hours are lower than those in normal years. According to the statistics of the Dawa meteorological data, during the period of rice growth during this year, the accumulative accumulated temperature values from April to September of positive accumulated temperature or greater than 10 ℃ decreased by 94 ℃ and 113.8 ℃ respectively from the previous year, Five. However, from the monthly distribution of temperature reduction in this year’s analysis, of which about 50% in April, and during this period as a result of the film covered