查询词典 fertility

Based on the analysis of natural and human activity factors which affected soil quality, the technical methods to sustainable utilization of cultivated land resources including district improvement, rational distribution, preventing soil erosion, rational fertility fertilization, reforming the faming systems were proposed.

在人为因素中，不合理的垦荒种植，难以改变的小型四轮拖拉机表土翻耕方式，不科学的肥料使用、管理方式，以及人口增长和经济社会发展的负面影响，都促使耕地质量在演变中逐步形成退化。

In traditional agricultural production , farmers always fertilizes the land at their own will , which not only increased the cost of agriculture production and worsened the soil fertility , but also caused serious environmental pollution and threaten .

传统农业生产中，由于农民盲目施肥现象严重，这样不仅造成肥料利用率下降，也增加了农业生产的成本，使得耕地地力下降，而且也带来严重的环境污染，威胁农产品质量安全。

This study presents the fertility results of sows inseminated with semen after various intervals of storage in this medium.

本文叙述了保存的猪精液在不同时同内母猪受胎产仔的效果，肯定了这种保存液的实用价值。

Preliminary results indicated that intercropping with P-efficient soybean genotypes could significantly improve maize growth and conserve soil fertility.

初步结果显示，用磷高效大豆基因型间作，可显著促进玉米生长和提高土壤肥力。

One reason why AIFU has the best spatial coupling effect is that it has a smaller evaporation area, thus its wate loss by this way is much smaller that traditional full irrigation; leching of fertilizer nutrients is much less than traditional irrigation because fertilizer and irrigating water exists in different furrows, the residual fertility exists in above 60 cm soil profile.

水肥异区交替灌水为一种局部灌水方式，其能够提高水分利用率的原因是可减少蒸发面积，从而减少灌溉水的蒸发损失；对养分的淋溶损失少，使肥料养分主要存在于60cm以上土层。

Acosta-Martínez V%Tabatatai M A Enzyme activities in a limed agricultural soil 10.1007/s003740050628 Biology and Fertility of Soils , 2000,null

和文祥%蒋新%卞永荣%王芳杀虫双对土壤酶活性影响的研究西北农林科技大学学报， 2002，1

The seeds of Adzuki bean were irradiated by 60 Co γ ray of 0～700Gy.The results showed that:(1)The sub\|lethal dose(LD 50 )was 389Gy and the early seedling leaf at M\-1 showed incised,chlorotic,yellow,mosaicand curly edge.The absorbed dose was related with the rate of misshaped leaf.Chromosomal aberration, chromosome bridge and fragment of M\-1 in the tip were observed.If the seed was irradiated with 400Gy,the rate of abnormal cell at the root was more than 10%.The relationship between pollen fertility and irradiation dose was negative correlated.

本试验研究结果表明：60 Coγ射线辐照小豆种子的半致死剂量平均为 3 89Gy ，且M1生长初期叶片性状有明显的叶面缺刻、叶色缺绿、叶形不对称、叶缘卷曲、花叶、黄叶等致变现象，各种畸型叶出现频率与辐照剂量大小有关；M1根尖细胞中有多种染色体畸变类型，以染色体桥和断片频率较高，辐照剂量在 40 0Gy以上时根尖细胞异常率达 1 0 %以上；植株花粉育性与辐照剂量呈极显著负相关，京农 2号植株花粉育性达 5 0 %时的辐照剂量为 3 78Gy。

In ancient times, he explains, Irish kings symbolically married the fertility goddess; famine meant the goddess had turned against the king and had to be mollified.

在古代，他继续解释说，爱尔兰国王象征性的和繁殖女神结合；饥荒则是女神开始对国王厌倦并需要抚慰的预兆。

If cloning produc es genetic monstrosities that render it impractical as another form of fertility enhancement, then it will not be necessary to ban it, because no one will use it.

倘若复制会产生遗传缺陷，而无法成为另一种实用的生育方法，就无必要明令禁止，因为没有人会想采用这种方法。

In their study, they found women with oulation-related fertility problems tend to eat more trans-fats than fertile women.

研究发现，有可以生育的女人相比，有排卵相关生育问题的女人喜欢吃较多的逆向脂肪。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐