共查询到19条相似文献,搜索用时 62 毫秒
1.
2.
3.
井灌水稻节水增温技术 总被引:3,自引:0,他引:3
针对寒地井灌稻区井水温度低影响水稻产量的实际问题,开展井灌水稻节水增温技术研究。结果表明,采用井水雾化增温、渠道上下铺盖塑料薄膜、本田地膜覆盖、插秧后浅灌与间歇灌溉等整合配套技术,可使寒地井灌水稻增产41.o%,节约灌水60.2%,667m^2增收131.61元。 相似文献
4.
5.
试验设井间控、井间歇、渠间控、渠间歇四个不同灌溉方式,进行处理间不同时期灌水量、土壤温度的日变化、气温与土壤温度的关系、井水灌溉不同时间内水温的变化、产量性状的调查,研究不同灌溉方式对水稻生育及产量的影响、公顷效益的分析,结果表明:①从整个生育期用水量分析,井间控与渠间控比井间歇与渠间歇节水,分蘖期、长穗期节水量最大。井间控比渠间歇节水21.2%,比井间歇节水18.2%。②井间控利用了快、少灌水原则,利用大面积田面进行晒水,与井间歇相比,增温速度快,增温幅度大,增温效果好。③井间控有较明显的节水和增产效应,是较理想的节水灌溉方式。 相似文献
6.
水稻分蘖特性及成穗规律研究进展 总被引:4,自引:0,他引:4
总结了水稻分蘖的基本特性及研究现状,指出通过提高水稻分蘖成穗率以提高水稻群体质量,从而提高水稻产量是水稻高产栽培的可行途径,还对水稻分蘖成穗率的应用研究前景进行了分析。 相似文献
7.
井水综合增温技术是寒地水稻抗低温,促早熟的一项重要内容,采用该技术,可使井水从出口处的6℃,经过一系列增温技术环节,最终到达本田的水田在16℃以上,促使水稻返青加快,分蘖力增强,成穗率提高,增产效果显著。 相似文献
8.
培养棉花壮苗是提高棉花产量,促进植棉增收的关键一环。多年来,在棉花育苗过程中,由于气候、不当的施肥施药以及茬口衔接等方面的原因,生产上常出现苗期发病死苗重,棉苗素质差,高脚苗多的情况,给棉花生产带来诸多不利。本试验旨在运用水稻壮秧剂具有施肥、调酸、消毒和化控四合一功能的作用,探索该剂在棉花育苗中不同施药方法和不同用药量对培育壮苗和提高成苗率的效果,为生产上大面积推广提供科学依据。1 材料与方法1 1 试验材料供试药剂为葵花牌强力水稻壮秧营养剂(下称壮秧剂),由浙江江山市兴农复合专用肥厂生产提供(其中的母剂由黑龙… 相似文献
9.
10.
11.
12.
《Plant Production Science》2013,16(3):200-205
AbstractThe tillering, lodging and yield of two types of direct-seeded rice (dry and water seeding), under deep water (DW) and ordinary water treatment (OW), were compared in 1994 and 1995. The percentage of productive tillers to maximum tiller number under DW was 85% for transplanted, 60% for water-seeded and 84% for dry-seeded rice (mean 76%), while that under OW was 59, 50 and 74% (mean 61%), respectively, in both years. By DW, longer culm length and fresh weight tended to be increased, thus elevating bending moment, but the culm diameter and culm-breaking weight were increased showing the lower lodging index. In water-seeded rice, the suppression of the development of non-productive tillers by DW was relatively weak compared to that in dry-seeded or transplanted rice. Although the number of panicles was similar under DW and OW, 1000-grain weight and percentage of grain filling were significantly improved by DW. The grain yield was higher under DW, and the mean grain yields of the two years were 4.82 t ha?1 under DW and 4.48 t ha?1 under OW. 相似文献
13.
本试验通过在水稻分蘖期间实行无水层管理,在保证水稻必要的生理生态需水的前提下,尽可能地减少田间的水分浪费,提高地温,促进分蘖早生快发。此项栽培技术既可以提高经济效益,又可以节约水资源,还可以有效地改善水稻的生育环境,减轻倒伏、早衰、病虫害等问题,是一项可以大力推行的栽培模式。 相似文献
14.
15.
16.
17.
通过对水稻只施基肥和穗肥的深施施肥试验研究,结果表明:深层施肥法可提高肥料利用率25%,增加水稻有效分蘖和成穗率,增加产量10%以上,节省人工,并避免贪青晚熟,减轻病害。 相似文献
18.
水稻配方肥肥效校正田间示范报告 总被引:1,自引:0,他引:1
介绍了测土配方施肥肥效在田间试验的情况。试验结果表明,配方施肥对提高水稻产量有着重要的作用,合理施肥会有效提高水稻的有效穗数、穗粒数、实粒数及产量,具有明显的节本增收作用。 相似文献
19.
《Plant Production Science》2013,16(2):237-242
AbstractThis study aimed to clarify the effects of water storage-type deep irrigation (WSDI) on the yields of various rice cultivars used in the Tohoku district of Japan. We compared a WSDI plot (DP) with a standard irrigation plot (SP) with regard to the growth, yield, and yield components of the rice cultivars grown in these plots during 4 years (2002–2005) in Sendai, Japan. In 2003, which had a cool summer, the yields in DP were considerably higher than those in SP, thus confirming that WSDI mitigated the cool summer-induced damage to rice. The yields in DP were not lower than those in SP during the other 3 years (normal climatic years), indicating that various cultivars could adapt to WSDI. Although high-yielding rice plants cultivated by well-experienced farmers under deep-water irrigation regimes have large panicles, the spikelet number per panicle and the yield in DP were not higher than those in SP. Based on the results of the comparison between the cultivation system of WSDI and that of high-yielding deep-water irrigation regimes practiced by such farmers, we speculated that to achieve a higher yield under WSDI, other cultivation techniques need to be incorporated into WSDI. 相似文献