共查询到20条相似文献，搜索用时 156 毫秒
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为了验证螯合肥料在水稻上的应用效果,为新型肥料推广提供理论依据,在辽宁盘锦大洼县西安镇上口子村进行田间水稻小区试验。采用田间对比试验方法,并采用方差分析方法对试验数据进行分析。试验结果表明:施用螯合肥对水稻的株高、每穴穗数、穗粒数、秕粒数、结实率、千粒重都有明显影响。其中施用螯合肥的水稻比施用复合肥和对照处理穴穗数分别增加2.67株和4株,穗粒数分别增加5.67粒和13.67粒,结实率分别增加1.10%和5.03%,千粒重分别增加3.4%和5.2%。小区平均产量分别增加23 kg/667 m~2和49 kg/667 m~2,增产率分别为3.15%和6.95%,增产效果明显。 相似文献
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通过对水稻施用大三元复合肥试验研究,结果表明:施用大三元复合肥后,水稻的穗数、成粒数、千粒重、产量等都有所提高,增产效果显著。而且,大三元复合肥不但肥效快且长,还具有抗病、抗倒伏的特点,有大面积推广应用的价值。 相似文献
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研究不同施氮量对松辽778产量结构及产量的影响,试验结果表明：处理2施纯氮量11.3 kg/667 m2,有效穗最多24.0万/667 m2,实粒数最多124.7粒/穗,结实率最高达90.2%,千粒重最大22.6 g,成穗率最高91.3%,产量最高为623.7 kg/667 m2。 相似文献
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水稻施用大三元复合肥试验总结 总被引：1，自引：0，他引：1
通过对水稻施用大三元复合肥试验研究，结果表明：施用大三元复合肥后，水稻的穗数、成粒数、千粒重、产量等都有所提高，增产效果显著。而且，大三元复合肥不但肥效快且长，还具有抗病、抗倒伏的特点，有大面积推广应用的价值。 相似文献
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以盐丰47为试验材料,采用小区对比试验方法,研究缓释肥与速效氮肥配比施用对机插水稻生长发育及产量的影响。结果表明,在插后1.5叶龄期施用一次蘖肥45 kg/hm^2,在插后7叶龄期施用112.5 kg/hm^2穗肥会获得高产。该施肥模式增加了后期穗肥的施用量,促进了齐穗后干物质向穗部的转移,抽穗期和成熟期干物质积累量大,同时高效叶面积指数、高效叶面积率和有效叶面积率大,该施肥模式齐穗及生育后期仍有较强的光合能力,达到了保蘖促花的作用。通过产量构成因素分析得出该施肥模式通过增加颖花数、千粒重、结实率和每穗成粒数实现高产。 相似文献
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Kifayatullah Kakar Naomi Asagi Masakazu Komatsuzaki Fumitaka Shiotsu Toshiaki Kokubo 《Plant Production Science》2013,16(4):510-518
ABSTRACTEffects of organic (Italian ryegrass and Bokashi) and chemical fertilizer on growth, yield, and grain quality of rice (Oryza sativa L.) were compared under different planting densities in 2013/2014 and 2014/2015. Italian ryegrass was incorporated into the soil as green manure. Bokashi (a mixture of organic materials) was applied as basal dressing. To measure yield and its components, 30 hills were chosen for each treatment. Rice grains were harvested from each treatment to assess the grain quality and to evaluate accumulation structures using a scanning electron microscope. Bokashi treatment increased panicle number per hill, ripened grain percentage, panicle number per m2, and grain yield compared to no fertilizer treatment at normal planting density. Chemical fertilizer treatment increased plant length at high planting density. Italian ryegrass and Bokashi treatments promoted the taste point (taste score as reference) by reduction of amylose and protein contents at normal planting density in contrast to chemical fertilizer. 1000-grain weight, panicle number per m2, and grain yield were higher at high planting density than at normal planting density. However, high planting density decreased panicle number per hill and spikelet number per panicle. It also enhanced the amylose content of rice grain. Scanning electron microscopic observation revealed that chemical fertilizer treatment marked up protein bodies and their traces on amyloplasts. However, Bokashi treatment produced large amyloplasts, which included many starch granules. These results show that Italian ryegrass and Bokashi can offset reductions of chemical fertilizer and can lead to sufficient starch accumulation structures in rice grains. 相似文献
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连续2 a对新宾地区水稻施用穗肥的适宜施用时期及施用数量进行研究,结果表明,水稻施用穗肥确实有防止颖花退化,增加每穗粒数的作用,可增加实粒数3.1～6.6粒/穗。水稻穗肥的适宜施用时期为水稻主茎幼穗长1.0～5.5 mm,水稻穗肥的适宜施用量为硫酸铵7.5～10.0 kg/667 m2。在施足农家肥水稻长势良好的条件下... 相似文献
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以牡响1号和牡丹江32为试验材料,通过改变水稻施氮量、插秧密度及插秧株数,探讨寒地粳稻有效穗率与产量的关系。结果表明,有效穗率与产量有显著或极显著正相关的趋势,究其原因发现,单位面积穗数随有效穗率的增加而增加,有效穗率与每穗实粒数有极显著的抛物线关系。为达到水稻最高产量不同品种有不同的栽培措施,对于牡响1号这种多穗型品种应通过提高施氮量来增加产量,而对于牡丹江32这种大穗、大粒型品种则应通过适当降低栽培密度和施肥量来达到高产。 相似文献
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采用裂区设计,研究了氮肥用量和插植密度对杂交粳稻辽优5206生长和产量性状的影响,为北方粳稻高产高效栽培提供依据。结果表明,随着施氮量增加,水稻分蘖数、抽穗期干物质量、拔节期SPAD值、株高和穗长显著增加,有效穗数、穗粒数和产量虽增加但不显著;随着栽插密度的增加,水稻分蘖数、干物质量、有效穗数明显增加,灌浆期SPAD值、株高、穗长、穗粒数显著降低,抽穗期SPAD值、结实率和产量则先增后降;氮肥用量和密度在产量等多数性状上互作效应不显著;取得高产的最佳肥密组合是240 kg/hm2和16.7万丛/hm2。 相似文献