三系杂交稻“筒优202”密度栽培试验和制种技术研究及应用

【作者】 赵福胜；

【导师】 余显权； 黄宗洪；

【作者基本信息】 贵州大学 ， 农业推广， 2006， 硕士

【摘要】 本课题以贵州大学农学院水稻研究所与贵州省种子站合作选育而成的筒优202为研究对象，为了充分发挥它的应用潜力和在我省水稻生产中的作用，开展了以下三方面的研究工作：1、研究该品种在贵州中部地区种植的最佳密度及与此相关的生理特性和产量性状，为大面积生产寻求新的增产措施。试验结果表明：(1)种植密度为15万穴／hm~2时产量最高，达9889.4kg／hm~2；随着种植密度的加大而每穗粒数、结实率、产量逐渐减小；(2)不同种植密度植株全氮、全磷、全钾含量随着水稻的生长发育有下降趋势，其中全氮、全钾含量变幅较大，而全磷含量变幅较小。2、根据“筒优202”父、母本的特征特性和海南试制种的结果，研究提出“筒优202”的高产制种技术，同时在我省适宜制种区进行了验证和修订，形成了一套较为完善高产制种技术措施。3、针对“筒优202”在我省不同生态区域大面积推广过程中出现的问题，提出相应的解决办法：(1)针对筒优202出现的稻瘟病问题采取的措施：①采用育种技术对父本——贵农筒恢再次进行稻瘟病田间自然鉴定；②与其它抗病良种进行合理搭配；③加强栽培管理和病虫防治；(2)就有关筒优202的生长特性、需肥特性以及相关的病虫防治问题进行大力宣传并在关键环节进行现场指导；(3)在稻田养鱼中建议采用起垄栽培方式或分厢栽培方式。更多还原

【Abstract】 The newly rice cultivar of "Tong you 202", which has been bred by the rice research institute of Guizhou University and the Seed General-Station of Guizhou Province according to the provincial situation, will be discussed in this article. The writer has done the research in three aspects according to its potential and its role in Guizhou’s rice production.I. The best density of the cultivar and the related physiological characteristics, production characters in central parts of Guizhou for finding new way in promoting the production outputs. The experiment result shows:1. We will get the most outputs if it is planted at a density of 150, 000 grains per hm~2 , that is, 9889.4 kg per hm~2 ; as the density of plantation gets larger, whereas the outputs, grains on each plant and the rate of the bear fruit decrease relevantly, however, the height of the plant and the effective spike get higher.2. In different plant densities from young plants to grouting plants, the content of phosphorus nitrogen and potassium declines relatively.II The "Tong you 202" technique has been put forward at the basis of his experimental plantation in Hainan and the characteristics of "Parents Tong you 202". The technique, in processing the highly produced outputs, has also been experimented and amended in some suitable places for plantation in Guizhou. III. Some solutions have come out for the problems appeared during our popularizations in different parts of Guizhou. 1 .The solution for the seasonal febrile diseases: 1) to identify the variety of itself and its parents of "Tong you 202"; 2) to group with other excellent varieties; 3) to pay more attention to the managements and the disease prevention. 2. The dissemination of the characteristics of "Tong you 202" and how we can stop the disease and the advise on the spot. 3. The advice on newly cultivations in the paddy fields with fish.更多还原