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1.合理安排错期二六窄早是一个生育期短、感温性较强的恢复系。据多年来观察,叶片的生长速度和全生育期,随不同年份日平均气温的高低有所变化,故宜以叶差为主,时差作参考。 2.增加父本基本苗,早管早分蘖二六窄早生育期短,营养生长期不长,分蘖力弱,如果不采取措施,往往会出现有效分蘖期已到,可穗数还不够的状况,造成花粉量不足而减产。因此,对父本应采用增加每亩用种量,每一期再分2次播种,大田栽双根等措施。具体办法是:把两期父本再分2批播种,如第一批父本先把它分成双份,每份各一半,然后分别在前后1～2天浸种催芽,并分别前后一二天播在一块秧田上,使之充分混合。移栽时,两批合一为第一批父本,在大田每兜栽双根。第二批父本同上,并早管促早发。
1. Rational arrangements for the wrong period Early six is a narrow period of growth, a strong sense of resilience. According to years of observation, leaf growth rate and whole growth period, with different years, the average daily temperature levels vary, it should be leaf-based, time difference for reference. 2. To increase the basic seedlings of male parent, early tube early tiller 26 short narrow early growth period, vegetative growth is not long, weaker tillering, if not take measures, often there will be effective tillering has been to spike is not enough Condition, resulting in insufficient production of pollen and cut. Therefore, the father should increase the use of seed per acre, each subdivision 2 times, field planting double root and other measures. The specific method is: the two parental subdivided into two batches of sowing, such as the first paternity first it is divided into two copies, each half, and then respectively 1 to 2 days before and after soaking germination, respectively, one day and one day Sow in a seedling, make it fully mixed. Transplanting, the two batches of unity as the first paternity, double root in each field in the field. The second generation of paternity Ibid, and early to promote early hair.