查询词典 fertility

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 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。

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。

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。

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 compound of neem oil have obvious effect of anti-fertility, the mechanism of its anti-fertility effect of compound of neem oil could be attributed to the metabolization of oocyte, and the obstruction of metabolization may cause the oocyte denaturalize and necrotize.

印楝油复合物具有明显的抗生育作用，其作用机制一方面可能是通过影响卵泡细胞的代谢过程，导致代谢障碍而致使卵泡细胞发生变性、坏死；另一方面，可能与局部细胞免疫介导有关。

I go to school at night.

我是上上学。

Clear Tip Nasal Aspirator: A soft time and gentle suction action makes removing excess mucus easy.

鼻吸明确提示：一个柔软的时间和温柔吸力行动使消除过剩的粘液容易。