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圭630是圭亚那引回的种稻品种,据说有菲律宾国际稻血缘.据初步观察,温度及水肥营养条件对其生育期都有影响.在莆田县晚季栽培,单本栽插,秧龄25天左右,从播种到抽穗需81～83天,比IR_(881)短7～9天,活动积温需2350～2450℃,主茎叶片数15～16张.株型比IR_(661)略松,分蘖中等,成穗率较高,抽穗比较整齐集中,花粉量较多.株高85厘米左右,茎秆粗壮,耐肥抗倒,叶色淡绿,谷粒长大,关刀形,三粒一寸,千粒重34—36克.一般正常栽培不包颈,在制种田割剑叶的情况下,有一些包颈.
Gui 630 is the kind of rice that Guyana leads back, it is said that there is the international bloodline of the Philippines.According to preliminary observations, temperature and water and nutrient conditions have an impact on their growth period.In Putian County late season cultivation, single planting, seedling age 25 days (81 ~ 83 days from sowing to heading, 7 ~ 9 days shorter than IR 881, active accumulated temperature 2350 ~ 2450 ℃, main stem leaves 15 ~ 16), slightly lighter than that of IR 661 , Tillering medium, high ear rate, heading more neatly concentrated, more pollen. Height of about 85 cm, stalks sturdy, resistant to lodging, light green leaves, grain growth, off blade, three Grain inch, grain weight 34-36 grams.General normal cultivation does not pack the neck, in the system of farming circumcision leaves, there are some package neck.