控释肥提高烟叶钾含量的机理研究

通过控释肥养分释放试验和烤烟盆栽试验,研究了控释肥料对植烟土壤供肥特性、烟株伤流液和烤烟根系活力的影响.结果表明:施用控释肥提高了土壤养分含量及其空间有效性;提高了土壤真溶液的钾含量,烟株旺长期土壤真溶液的养分含量最高;大幅度提高了成熟期伤流液中钾的累积量.控释肥能够降低K+与Ca2+、Mg2+拮抗作用,提高钾的有效性...     

腐植酸肥对百色植烟土壤养分和烤烟香气质量的影响

正2010-2011年采用大田试验,研究了施用腐植酸肥对百色植烟土壤养分和烤烟香气质量的影响。结果表明,施用腐植酸肥可提高土壤速效钾、有机质等主要养分含量,并能明显提高烤烟的经济效益,以腐植酸肥用量为150 kg/hm~2的烤烟经济性状指标最高。施用腐植酸肥能改善烟叶     

含腐植酸不定根诱导肥对烤烟生长及烟叶品质的影响

以"云烟87"为研究对象,开展不同时期施用含腐植酸不定根诱导肥对烤烟生长及烟叶品质的影响研究,旨在为南方烟区烤烟不定根的构建提供理论支持。结果表明,施用含腐植酸不定根诱导肥能够显著改善烟株农艺性状,调整烟叶物理化学特性,提升烤烟产值。移栽时基施和揭膜时围兜施含腐植酸不定根诱导肥对烟株不定根改善效果优于其他处理(P0.05),主要表现在根干重与不定根数量的增加,分别较CK提升了67.73%和28.27%。综合而言,移栽时基施和揭膜时围兜施含腐植酸不定根诱导肥效果最优。     

烟草黑胫病药剂防治试验示范

烟草黑胫病是严重为害烟草的根茎病害之一。近年来云南省种烟面积不断扩大,实行粮烟三年轮作,受土地面积的限制,烤烟连作面积较大,优质当家品种抗病力不强,黑胫病为害逐年加重。据调查,每年黑胫病损失烤烟1150万斤,为各种病害损失之首位。因此,我     

云南省硅肥开发利用现状以及对今后工作的几点建议

介绍了云南省硅肥的肥效试验及应用进展，提出了在云南发展硅肥的建议与措施。     

高浓度烤烟专用肥肥效试验

介绍高浓度烤烟专用肥肥效试验。结果表明：楚雄磷肥厂生产的高浓度烤烟肥，可以代替进口的同类化肥。     

用质量分析仪测定硅烟在加热气氛下产生的气体

用质量分析仪对５种硅烟的高温物理性能进行了研究试验，结果弄清：硅烟中含有氧化后能产生ＣＯ和ＣＯ２气体的游离碳；硅烟能有效降低碳化硅在高温下的氧化速度。     

硅肥发展现状及展望

介绍了硅肥的定义、分类、发展、土壤有效硅临界值、硅肥的作用和增产效果。对硅肥生产现状、制备工艺及存在问题作了综合分析,指出了以煤渣为原料、特别是催化气化含碱灰渣,经煅烧和添加助荆煅烧提高有效硅含量和制备硅肥的可行性及其前景。     

硅肥的应用研究进展

对硅肥的作用、土壤缺硅的原因、影响硅肥肥效的因素及其增产效果作了综述     

硅肥的应用研究进展

对硅肥的作用、土壤缺硅的原因、影响硅肥肥效的因素及其增产效果作了综述。     

云南省水稻施用硅肥肥效研究

通过小区试验及６２组同田对比示范实收亩产证实，硅肥亩施３０～５０ｋｇ，可增产稻谷５．９％～１７．１％，其处理间“Ｆ”值及“ｔ”测验垃达显著标准，其增产原因于促进秧苗早生，快发，对水稻白叶枯病可以缓解，提高稻谷的经济性状，其结论与河南省研究结果基本一致。     

烟草、果树的科学施肥方法

科学施肥是提高种植作物产量、品质和降低生产成本的重要技术手段。阐述烟草、果树的施肥方法;氮、磷、钾肥的施用方法：为普及施肥知识,做到科学施肥。     

Improving Maize Yield with Advancing Planting Time and Nano-Silicon Foliar Spray Alone or Combined with Zinc

Silicon - A two years field experiment was carried out to determine the effect of planting time and foliar application of zinc (Zn) and nano silicon particle (NSP) on maize. SPAD value, leaf area...     

Nitrate accumulation, yield and leaf quality of turnip greens in response to nitrogen fertilisation

Two pot and two open-field experiments were conducted to determine the influence of N fertilisation on nitrate accumulation, yield, and leaf quality of turnip greens (Nabiças, Brassica rapa var. rapa). The pot experiments were conducted: (1) in a controlled environment (24 h photoperiod at 250±25 mol s^-1 m^-2, and 20±1 °C ), and (2) outdoors (315 w m^-2 mean solar radiation, and daily mean air temperature between 19 and 26 °C). The response of plant biomass to N from 0 to 250 g m^-3 of pot-soil, in each of the two experiments, was characterised by a steep increase in weight until the level of N reached 100 g m^-3, with a tendency to stabilisation thereafter. There was a clear turning point around 100 g m^-3 N, beyond which plant biomass did not significantly increase in response to N application. When fertilisation with N was increased from at 100 to 250 g m^-3, plant fresh weight increased by 7.4 and 8.6% and nitrate concentration by 279 and 1315%, respectively, in both growth-room and outdoors pot experiments, showing that turnip greens may easily reach conditions of luxury consumption of N. In the two open-field experiments, turnip plants were grown in a clay soil, in winter and in spring at Lisbon, Portugal. Increasing N fertilisation from 0 to 200 kg ha^-1 resulted in plants with higher fresh weight both in winter and spring. Plant nitrate concentration in winter was higher than in spring at the same applied N. The increase of plant fresh weight in response to N had a clear asymptotic tendency at N exceeding 160 kg ha^-1, but the increase of leaf nitrate had a linear trend showing a clear tendency for nitrate accumulation in the leaves. N induced a darker green leaf colour but had no effect on leaf taste and texture. Increasing N fertilisation up to 200 kg ha^-1 seemed to be an effective means of improving yield and quality of turnip greens and of shortening the cropping cycle.     

有机钾肥及氨基酸络合微肥对烤烟产质效应的影响

研究了有机钾肥分别作为基肥和叶面肥和以含稀土的氨基酸微肥作为叶面肥对烟株的植物学性状、光合作用的影响以及对烟叶质量、产值和品质的影响,试验结果表明：当以有机钾肥作为基肥,并在生育期和成熟期分别喷施有机钾肥和含稀土的氨基酸微肥作为叶面肥时,烟时的产量、产值可增加10%以上,烟叶中钾含量及烟叶品质均可得到明显的改善。     

Harpin_(Ea)蛋白制剂对葡萄、杨梅产量及品质的影响

Messenger对藤捻葡萄,巨峰葡萄和丁岙杨梅的生长以及品质试验表明,能够显著地促进葡萄叶重和叶面积增加,促进春梢伸长,提高单果重和单株产量,并且使成熟期提早7-8 d;也能够促进杨梅果柄生长。能显著改善巨峰葡萄、丁岙杨梅的品质,各处理的总糖、还原糖、维生素C以及固形物等均有提高,使用浓度以30 mg/ml为最佳。     

上下部烟叶综合应用的研究初探

为提高上下部烟叶的使用价值,根据上下部烟叶特点,采用食用酒精浸提上部烟叶制得浸膏,一种途径是将其加入到下部烟叶中。另一种途径是调整叶组配方结构,把加了上部烟叶浸膏的下部烟叶按一定比例与叶组配方混合进行烟气分析,由卷烟感官评吸和烟气分析结果,表明这两种途径不仅能保证卷烟的使用价值,改善其香气和劲头,而且同时能起到降焦减害的目的,达到了综合利用上下部烟叶的效果,并且使得调整叶组配方结构成为可能。     

贮叶条件对烟叶品质的影响

研究了贮叶条件对烟叶品质、烟草含水率以及形态的影响。结果表明：①在一定的条件下,贮叶时间对卷烟感官质量、烟丝填充值和化学成分基本无影响;随着贮叶时间延长,烟丝整丝率呈下降趋势。②在不同的贮叶环境条件下,贮叶时间对烟草含水率和温度幅度以及烟丝的物理形态产生不同程度的影响。     

Does Foliar Application of Silicon under Natural Water Stress Conditions Increase Rice Yield in Subtropical Dry Regions?

Silicon - Silicon, although not an essential element for plant, when it is absorbed can alter cells flexibility, and then may affect plant architecture; reduce leaf senescence and deleterious...     

Beneficial Effects of Silicon (Si) on Sea Barley (Hordeum marinum Huds.) under Salt Stress

Silicon - Silicon (Si) plays an important role in providing beneficial effects on plant growth and yield, especially under stressful environments such as salinity. The objective of this work is to...