随着杂交水稻制种技术的发展与产量水平的提高,制种这项技术,已从原先单纯的栽培措施,发展为生物、化学、机械等多因素构成的综合工程技术。这一转变,进而促使杂交水稻制种产量有了新的突破。以下从四个方面来阐述制种工程技术的实用价值。一、花期工程技术:花期相遇,是制种高产的首要环节。然而,花期遇否,主要取决于播种、插秧期的设计,施工及调控。其次,才是自然条件的影响。播插期的设计兰图,则按人们的意愿,根据亲本的熟期性,因稻作不同而灵活掌握。如汕优63组合,在福建作中稻制种,父本宜在4月下旬播种,母本于6月上旬播种,父母本播种时差40—41天;叶差8.3—8.5叶。作连晚制种,父本宜于6月上旬播种,父母本播 With the development of hybrid rice seed production technology and the improvement of yield, seed production technology has evolved from a simple cultivation measure to a comprehensive engineering technology composed of many factors such as biology, chemistry and machinery. This shift led to a new breakthrough in hybrid rice seed production. The following four aspects to explain the practical value of seed production engineering. First, the flowering engineering: flowering encounter, is the primary production of high-yielding links. However, whether the flowering period depends on the design, construction and regulation of planting and transplanting. Second, is the impact of natural conditions. Broadcasting design of the blueprint, according to the wishes of people, according to the maturity of the parent, due to different and flexible grasp of rice. Such as Shanyou 63 combinations, in Fujian for rice seed production, male parents should sow in late April, the female parent sow in early June, the parents of the sowing time difference 40-41 days; leaf difference 8.3-8.5 leaves. For late cropping, the male parent should be planted in early June, parents of this broadcast