查询词典 fertility

Study on the pollen fertility and the process of pollen formation and development in autotetraploid rice showed that the pollen fertility was high (78.33%), though many abnormities appeared in this process.

通过对5个品种的同源四倍体水稻花粉发育过程和13 个品种的花粉育性调查结果表明，同源四倍体花粉平均育性为78.33%，明显比二倍体（91.85%）低。

In order to discuss the effect of soil fertility on composition transformation and energy change of corn stalk during decomposition, carborundum tube was used to study the decomposition of corn stalk buried in different soils with high, medium and low fertility for 480 days. The decomposition rate and change of energy states of corn stalk were revealed.

为了探讨农田不同肥力对玉米秸秆腐解转化和能态变化的影响，该文采用砂滤管法在陕西关中高、中等、低3种肥力塿土上进行了480 d的玉米秸秆腐解试验，研究了腐解进程中玉米秸秆的分解率以及有机碳组成和能态变化。

Fruit trees and flowers, birds and animals, shimmering tiles, and the gleam and murmur of running water—these are the vibrant and delicate substances from which, like a beautiful carpet, the Islamic garden is woven.Indeed, Islamic carpet design and garden layout go hand in hand.Garden carpets depict in a stylized manner the chahar bagh, or fourfold garden with its intersecting axial watercourses surmounted by a central fountain.In addition, they depict symbolically the vegetation planted in actual gardens:the shade-giving plane tree, identified with the Tuba tree in the Quran; the cypress representing death and eternity; and fruit trees standing for life and fertility.The central cartouche can interpreted as a platform, which in real gardens was often surmounted by a pavilion.These form the basic and timeless design formula of the Islamic garden—one or more quadripartite sections defined by narrow water courses—which has its roots in ancient Persia where the archaeological remains of Achaemenid palaces trace the outlines of pavilions overlooking carved stone channels.

果树和花卉，鸟兽，闪烁瓷砖，以及闪光和杂音的自来水-这些都是充满活力和微妙的物质，像一个美丽的地毯，伊斯兰园林woven.indeed ，伊斯兰地毯设计与园林布局齐头并进hand.garden地毯描绘在程式化地察哈尔巴格，或四倍花园与其相交轴水道克服了由一个中央fountain.in此外，他们还描绘象征性的植物种植在实际花园：耐荫给予平面树，确定与大号树在可兰经；桧代表死亡和永恒；栽果树，站立，生活和fertility.the中央cartouche可以解释为一个平台，而在真正的花园往往是克服由pavilion.these形式基本和永恒的设计公式伊斯兰花园式的一个或一个以上的四方节所界定的狭窄水道-其中有它的根在古代波斯，而考古遗迹的阿契美尼德宫殿追查纲要凉亭俯瞰石刻渠道。

In this paper, it mainly adopts an analytical method of contrast, with shelter belt and noshelter belt are research object, though field survey and soil fertility index analysis, discussJilin province Nong\'an Fulongquan town mechanism fertility degeneration of chernozem.

本文主要采用对比分析的方法，以防护林带和非防护带两种不同生境影响下的土壤为研究对象，通过田间调查和对土壤肥力指标分析，探讨了吉林省农安县伏龙泉镇境内黑钙土土壤的退化机理。

Also apiculus color segregated in three segregation populations, the further study on the relationship between spikelet fertility and apiculus color indicated that the average spikelet fertility of individuals with apiculus color was significantly higher than those without apiculus color, which implied the gene responsible for wide compatibility in Aiga should be linked with chromogen C.

进一步研究稃尖色的分离与育性的关系发现，在三个三交群体中，稃尖有色株的平均小穗育性都极显著地高于稃尖无色株，说明控制矮嘎的广亲和性基因与色素原基因C之间存在连锁关系，推测矮嘎中也带有广亲和基因Ss〓。

The results showed that there were significant Conics relations between nitrogen application rate and wheat yield in high and middle soil fertility level, but it was a linear correlation under low fertility soil.

中文摘要：以江苏淮北麦区主推中筋小麦淮麦19和强筋小麦烟农19为材料，研究了高、中、低肥力稻茬田上施氮量对小麦籽粒产量和物质生产的影响。

The soil urease and invertase activity effected by Hg was investigated in different fertility soils. The results show that soil urease activity、maximum reaction velocity (Vmax、Vmax/Km) and reaction velocity constant k have remarkably negative correlation with Hg concentration so that these can be used as ecological indexes of soil polluted by Hg, Km changes a little indicating that the reaction mechanism of Hg and urease is nonreversible competitive restraint. Urease of low soil fertility is more damaged by Hg than that of high soil fertility, with severe pollution at Hg concentration of 6.00 and 14.79mg/kg respectively; while invertase is less sensitive to Hg than urease. Cultural time has less influence on the relationship of soil enzyme and Hg concentration.

对不同肥力土壤脲酶和转化酶活性受汞影响进行了研究，结果显示，土壤脲酶活性、最大反应速度Vmax 、Vmax/Km和反应速度常数k与汞浓度呈现显著或极显著负相关关系，表明其可作为土壤汞污染的生态指标；米氏常数Km则变化较小，表明汞与脲酶作用机理为不可逆竞争抑制；低肥力土壤脲酶比高肥力土壤脲酶受汞毒害作用更强，当汞浓度分别为6.00和14.79mg/kg时即达到严重污染；而转化酶对汞的敏感性较差；培养时间对土壤酶与汞浓度间关系影响较小。

For 480 days of decomposition, the decomposition rate was highest in soil with medium fertility and lowest in soil with low fertility among three type of fertility. The decomposition of water soluble factions and lignin were promoted in medium fertility soil. However, alcohol-benzene soluble fraction, and semi-cellulose and cellulose fraction were decayed acceleratedly in soil with high fertility. Furthermore, more humic substance was formed and energy states of decayed corn stalk was highest in soil with high fertility.

腐解480 d，3种肥力间比较发现，玉米秸秆在中等肥力田块上矿化率最高，低肥力田块上的最低；中等肥力土壤能够促进玉米秸秆中的水溶性有机组分和木质素的分解，而高肥力土壤能够促进苯–醇溶性组分和半纤维素、纤维素分解，并有利于腐殖物质的形成，而且腐解物的能态最高。

The QTL controlling spikelet fertility and pollen fertility were investigated based on the Balilla/NTH//Balilla backcross population by SSR marker. For spikelet fertility trait, two QTLs, qSPTF1 on chromosome 1 and qSPTF6 on chromosome 6, were detected, and their additive effect were 13. 501 and -16. 414, respectively. According to previous studies, qSPTF6 was deduced to be same as S〓.

以回交群体 Balilla/南特号//Balilla 为育性基因的分析群体，研究了该群体中控制小穗育性和花粉育性的基因位点，对于小穗育性共检测到2个QTLs，qSPTFl和qSPTF6，分别位于第1和第6染色体上，其加性效应分别为13.501和-16.414。

Based on the soil fertility and fertilizer effect of Beijing brown chao soil in the way of microtrial of winter wheatsummer maizer continuous cropping,the annual grain yield and the tenyear soil organic matter change show that the crops yield,soil organic matter and soil fertility can be improved significantly by using N P K chemical fertilizers together with organic material under lower soil fertility.

通过对北京褐潮土土壤肥力和肥料效益监测基地10年定位微区试验的调查分析表明：在土壤肥力水平较低的情况下施用氮、磷、钾化肥及氮磷钾化肥与有机物料配施，具有显著提高粮食产量的作用，并较大幅度提高土壤有机质含量；随着有机物料施用量的增加，效果更为明显。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。