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1 合理安排播期,确保花期相遇父本肥床旱育能否成功,关键因素是父、母本花期能不能相遇。由于父本肥床旱育经两段水育秧播始期长4d时间,我们根据本地的气候特点把父、母本播差期确定为58d,比父本两段水育秧的播差期拉长5d,实践证明这样安排是比较理想的。1999年基地67hm~2汕优559制种一期父本4月20日播种,母本6月17日干籽播种。父、母本皆在8月15日抽穗,属同抽类型,尽管由于当时遇到8月16～17日连续2天阴雨,平均产量仍达134.5kg/667m~2,2000年全市134hm~2汕优559制种,父本全部采用肥床旱育技术,一期父本4月18日播种,母本6月15日播种。父、母本皆在8月14日抽穗平均
1 Reasonable arrangements for sowing date to ensure that the flowering date fattening bed dry fertility success, the key factor is the parent and female parent flowering can not meet. Because the male and female fat bed dry-up two days of watering and seedling sowing period of 4d time, according to local climate characteristics of the parent and the female sowing period was determined to be 58d, sowing period than the father of two watering seedling elongated 5d Practice has proved that such an arrangement is ideal. 1999 base 67hm ~ 2 Shanyou 559 seed production of a paternal April 20 sowing, the mother of June 17 dry seed sowing. Both the parent and the female parent were heading on August 15, belonging to the same type of pumping. Although the average output still reached 134.5kg / 667m ~ 2 due to the rainy days of August 16 ~ August 2, Shanyou 559 seed production, the father of all bed using dry technology, a parent of April 18 planting, female June 15 planting. Father and mother are heading average on August 14