共查询到20条相似文献，搜索用时 218 毫秒
1.
2003年浙江省审定通过的水稻品种 总被引：1，自引：1，他引：0
1.嘉早312浙江省嘉兴市农科院选育的早籼稻品种。2001年浙江省早籼稻区试 ,平均单产483.39kg/667m2,比对照浙733增产13.6% (极显著 ) ;2002年续试 ,平均单产420.9kg/667m2 ,比对照嘉育293增产8.14%。2002年浙江省生产试验平均单产374.6kg/667m2 ,比对照嘉育293增产1.82 %。该品种全生育期109.45天 ,茎秆粗壮 ,株高适中 ,分蘖力中等 ,穗型较大 ,穗粒重结构协调 ,耐肥抗倒。米质较优。中抗白叶枯病 ,中感稻瘟病。适宜浙江省作早籼稻种植 ,但应注意稻瘟病的防治。2.中早21中国水稻研究所选育的中熟早籼稻品种。2001年浙江省金华市区试 ,平均单… 相似文献
2.
桂丰2号是广西水稻研究所从IR60830 -110 -3 -3 -1中系统选育出的早籼中熟优质稻新品种 ,2000～2002年经区试及多点试种 ,表现出高产、稳产、耐肥抗倒、米质优、适应广等特点 ,深受群众欢迎。2001年12月通过广西农作物品种审定委员会审定。一、产量表现1999年晚季品系比较试验 ,折单产437.1kg/667m2,比对照七桂占增产6.22% ;2000年晚季品系试验单产465.0kg/667m2,比对照七桂占增产0.54 % ,同年晚季大田繁殖 ,平均单产436.6kg/667m2。2001年参加广西优质稻组区试 ,早季平均单产为391.60kg/667m2,比对照七桂占略减产1.8% ,减产不显著 ;晚季续… 相似文献
3.
《中国稻米》2014,(5)
正特征特性:该组合全生育期147.1天,茎秆粗壮,分蘖力较弱,株型集散适中。剑叶直立、叶姿挺拔、叶色深绿。谷粒短圆,着粒密度较密。颖尖无芒、颖壳秆黄色、颖尖无色。落粒性中等。抗倒性较强,后期转色好,米饭口感软。中抗稻瘟病,中感白叶枯病,感褐稻虱。产量表现:2008年浙江省单季杂交晚粳稻区域试验平均单产516.0kg/667m~2,比对照秀水09增产8.7%,达显著水平;2009年续试平均单产511.1 kg/667m~2,比对照秀水09增产8.7%,达显著水平。两年省区试平均单产513.6kg/667m~2,比对照增产8.7%。2008年浙江省桐乡市种子公司试种1.33hm~2,平均单产达652.0 kg/667m~2。 相似文献
4.
徐稻5号是江苏徐淮地区徐州农科所采用有性杂交和系统选育技术培育的中熟中粳稻新品种,2006年通过农业部国家农作物品种审定委员会审定。该品种全生育期150d左右,株高97．4cm,每穗总粒数135粒左右,结实率90％以上,千粒重26g;国家区试两年加权平均产量533．6kg／667m^2,比对照豫粳6号增产7．7％,生产试验平均产量572．9kg／667m^2,比对照豫粳6号增产9．4％;稻米品质达国家《食用稻品种品质》（NY/T593—2002）优质2级标准。 相似文献
5.
6.
2004年浙江省审定通过的水稻品种（组合） 总被引：1，自引：1，他引：0
嘉育46。系由嘉兴市农科院育成的早籼稻品种,亲本来源：嘉育293/Z94-207//G96-28-1。2002～2003两年浙江省早籼稻区试,平均单产461．5kg/667m^2,比对照嘉育293增产7．41％。全生育期110．3天。2003年浙江省生产试验,平均单产488．3kg/667m^2,比对照嘉育293增产10．75％。中抗稻瘟病,感白叶枯病。米质中等。适宜在浙江省作早稻种植。 相似文献
7.
1.丰优559属中熟杂交中籼稻组合 ,由江苏沿海地区农科所、广东省农科院水稻所以粤丰A/盐恢559配组育成。2001～2002年参加江苏省区试 ,两年平均单产635.08kg/667m2,较对照汕优63增产5.84 %(均极显著 ) ;2002年生产试验 ,平均单产598.6kg/667m2 ,较对照汕优63增产6.58 %。株高12 相似文献
8.
9.
水晶２号株高１０１．５ｃｍ,分蘖中等 ,株形紧凑 ,穗长 ,着粒密度较稀。平均穗长１９．４ｃｍ ,每穗总粒１０３．３粒 ,实粒９７粒 ,结实率９３．７%。产量高 ,１９９９年 ,松江区种子公司组织区试 ,佘山点单产５９５．４ｋｇ／６６７ｍ２,居１５个参试品种第６位 ,闵行区种子管理站组织区试 ,马桥点单产５１２．７ｋｇ／６６７ｍ２,居７个参试品种第１位 ,比对照９３-６３增产８．６７%。松江区佘山镇农业公司 ,生产试种１ｈｍ２,平均单产４８７．５ｋｇ／６６７ｍ２。２０００年 ,闵行区马桥镇第二农场试种１．３４ｈｍ２ ,平均单产５５… 相似文献
10.
（1）南京15号：原名32020，由江苏省农科院粮食作物所以特青与南京2157杂交，于1993年育成的中熟中轴稻品种。1995～1996年两年省区试试验，平均每667m~2产量604．65kg，比对照扬辐舢2号增产5．56％，达权显著水平，产量居第3位，日产量居第1位。1997年省生产试验，平均每667m~2产量562．24kg，比对照扬辐税2号增产2．44％，丰产性、适应性较好。该品种株型较紧凑，株高105cm左右，茎秆粗壮，剑叶挺直，叶色浅绿，分率性较强，穗大粒多，相位结构较协调，一般有效稳255～270穗／m’，每税总粒数150余粒，结实率90％以上，千粒重25．5g左右… 相似文献
11.
《Plant Production Science》2013,16(2):189-198
AbstractGrain number per spike of wheat is lower in early sowing than in the conventional standard cultivation in Yamaguchi, Prefecture, Japan. Components of the grain number per spike in five cultivars were analyzed with respect to temperature during the spike development period throughout three growing seasons 2001/2002, 2002/2003 and 2003/2004 to find the cause of the problem of early sowing cultivation. The plants sown in early-October and late-November were called the early sown group and the standard group, respectively, in the following. Three of the five cultivars, Hokushin, Akitakko and Nanbukomugi, showed a strong winter habit, which requires very cold temperatures for spike differentiation. The other two cultivars, Iwainodaichi and Airakomugi, had a moderate winter habit. Grain number per spike and grain yield were decreased by early-sowing (compare with the standard group) in almost all cultivars throughout the three growing seasons. The three cultivars which had a strong winter habit had fewer spikelets per spike in the early-sown group than in the standard group. The other two cultivars which had a moderate winter habit had fewer grains per spikelet in the early-sown group. The higher the temperature during the spikelet formation phase, which is from flag leaf initiation to terminal spikelet initiation, the higher the number of spikelets per spike in the standard group. The spikelet number per spike in the early-sown group increased with the increase in productive tillers under fertile conditions. Such conditions also increased the grain number per spike. 相似文献
12.
《Journal of Crop Improvement》2013,27(2):415-432
Summary This paper reviews the effects of allelopathic interactions in agroecosystems in Spain on plant physiological activity and their ecological advantages. The phenological stage of growth of donor plants and the effective allelochemicals in the soil solution while studying the role of phenolic compounds were highlighting. Finally possible future prospects and conclusions regarding weed control by allelochemi-cals under integrated crop management strategies are discussed. 相似文献
13.
14.
以翔实的资料对2009年中国稻米生产、消费、进出口、供求平衡、库存、价格走势、购销政策和国际稻米供求等情况进行了全面地分析,对影响2010年稻米市场价格走势的各种因素进行了深入研究,并在此基础上对2010年我国稻米市场价格走势进行了预测,结论是我国稻米价格仍呈上行趋势。 相似文献
15.
Corné Kempenaar Thomas Been Johan Booij Frits van Evert Jean-Marie Michielsen Corné Kocks 《Potato Research》2017,60(3-4):295-305
Precision agriculture is a farming management concept based on observing, measuring and responding to inter- and intra-field variability in crops. In this paper, we focus on responding to intra-field variability in potato crops and analyse variable rate applications (VRAs). We made an overview of potential VRAs in potato crop management in The Netherlands. We identified 13 potential VRAs in potato, ranging from soil tillage to planting to crop care to selective harvest. We ranked them on availability of ‘proof of concept’ and on-farm test results. For five VRAs, we found test results allowing to make a cost-benefit assessment. These five VRAs were as follows: planting, soil herbicide weed control, N side dress, late blight control and haulm killing. They use one of two types of spatial data: soil maps or biomass index maps. Data on costs and savings of the VRAs showed that the investments in VRAs will pay off under practical conditions in The Netherlands. Savings on pesticide use and N-fertilizer use with the VRAs were on average about 25%, which benefits the environment too. We foresee a slow but gradual adoption of VRAs in potato production. More VRAs will become available given ongoing R&D. The perspectives of VRAs in potatoes are discussed. 相似文献
16.
17.
18.
Summary Diurnal changes in net photosynthetic rate were measured in a furrow-irrigated potato crop and in a riverbed crop where the
water table was always maintained at 20–28 cm from the soil surface. In the irrigated crop, the photosynthetic rate during
mid-afternoon was about half the peak rate observed at noon. This reduction was accompanied by a near tripling of stomatal
resistance, a 45% reduction in transpiration, and a 5-fold increase in the difference between leaf and air temperatures. No
such changes were observed in the riverbed crop where the photosynthetic rate remained nearly constant at about 0.9 mg m−2 s−1 between 9 a.m. and 4 p.m. Tuber yield in the riverbed crop was about 30% higher than in the irrigated crop. 相似文献
19.
20.
体细胞无性系变异是一种重要的细胞工程育种技术,其应用于棉花育种的前提是建立高效的组织培养诱导再生植株体系.本文简要综述了棉花离体诱导植株再生研究的现状,重点讨论了棉花体细胞无性系变异的表现、利用方法及机理,提出了当前研究存在的问题并对今后的研究进行了展望. 相似文献