通化市水稻高产群体的形成要素分析

通过几年来水稻新品种与综合栽培技术配套项目的推广及１９９６年省、市两级丰产方总结工作，初步总结出通化市水稻实现１万ｋｇ／ｈｍ２高产群体的形成要素，取得了壮秆偏大穗型品种、稀播旱育壮秧、超稀植、控氮增钾、浅水湿润灌溉等综合配套技术，控制每平方米有效穗数４００个、穗粒数超１００个、混合千粒重超２３ｇ高产群体的形成要素。

Analysis on Formative Factors of High Yielding Population of Rice in Tonghua District

According to the summarization of the popularization of varieties and cultivated technology and high yield square of Jilin province and Tonghua city in 1996,the formative factors of high yielding population of rice above 10 000 kg/hm 2 in Tonghua District were analyzed.We have got a synthesis technology which uses polarity big_eared varieties,sound seedling with thin sowing and dry nursery,extra spaced planting,controlled using nitrogen and increasing phosphorus and potassium fertilizer,shallow and wetting irrigation and so on.The formative factors of a high yielding population may be consist of 400 ears/m 2,100 grains/ear and 23 grams of 1 000 grains wight above.