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The most important diseases are caused by fungi,eg Ustilago Scitaminea Syd.However sugarcane is a nonsexual propagation crop with highly ployploidy and complex genetic background,breeding pathogens-resistance cultivals by using traditoonal breeding techniques will be a formidable task.

甘蔗是我国最为重要工业原料作物,近年来由于高产、高糖甘蔗品种的大面积使用,又缺乏相应的抗病品种,甘蔗病害日益严重,尤其是甘蔗的黑穗病、梢腐病等真菌病害常在蔗区大面积流行,严重影响甘蔗的产量和质量。

It was found greater expression of NRP2-1 and NRP2-2 in pituitary, ovary, uterus and oviduct of ruttish Erhualian than corresponding tissues of ruttish Duroc, which suggested enhancing expression of NRP2 was favorable to increasing litter size. But the difference of NRP2 expression was not significant between two breeds, which suggested the key phase that NRP2 affected litter size was not oestrum probably, or NRP2 could enlarge cell signals and finally affect litter size ascribe that it was the receptor of nerve axon guidance factors.

NRP2-1和NRP2-2在发情期二花脸卵巢、子宫、输卵管中的表达量均大于杜洛克相应组织的表达量,推测NRP2表达水平高可能有利于提高产仔数,但两品种间表达差异不明显,推测NRP2影响产仔数的关键阶段可能不是猪的发情期;另外,NRP2 是神经轴突介导因子的受体,这些神经轴突转导的信号往往有级联放大的功能,虽然NRP2-1和NRP2-2在二花脸和杜洛克卵巢、子宫、输卵管中的表达差异不大,但二花脸有可能通过神经系统转导信号的级联放大最终引起一些效应激素或蛋白的急剧增加,从而提高排卵率或产仔数。

Polymer flooding has played a great role for the high yield and stable yield for Daqing oil-field.

聚合物驱为大庆油田的高产和稳产发挥了巨大作用。

In high yield and high quilty fruit-producing areas, soil organic matter is enhanced by organic fertilizer application, growing grass in orchard, returning grass or stalk into orchard soil.

在优质高产果园区,果园土壤有机质提高归因于施用有机肥、果园种草、青草或秸秆还田。

To achieve 2 to 3 Mu basic farmland per person in the whole county as early as possible; to adjust the traditional crop production structure; to improve the organization system of agriculture technology popularization, to popularize quality and high yield planting techniques, promote the quality and yield per unit area, achieve food self-sufficiency and ensure food security.3 According to the zone characteristics of vegetation and the sub-divisions of climate and vegetation in Ansai County, we must rationally allocate forest, orchard and grass in different land.

全县尽快实现人均2~3亩基本农田:调整种植业结构;健全农业技术推广组织体系,综合推广优质高产栽培技术,提高单位面积作物质量与产量,基本实现粮食自给,保证粮食安全。3根据植被地带性特征和安塞气候、植被分区,合理配置安塞生态林草和经济林果。

Unfortunately for its reputation, there are many other Italian Pinot Grigio makers that overcrop and harvest early to produce crisp, but vapid wines.

不幸的是虽然有很好的名声,但是那里也有许多的酒农用高产的,较早收获灰比诺生产较为清爽却平淡的葡萄酒。

Accordingly, we have shifted our breeding objectives from increasing productivity into improving palatability of rice varieties.

因此,人们已将育种目标从高产转向口感良好的水稻品种。

The more photosynthates distributed in stems and sheathes at maturity of main crop , especially in internodes below the 2nd from the top , the higher yield of palingenesis rice would get .

可见,选用穗粒数多,成熟期残留在茎鞘,特别是倒2以下节间中的光合产物较多的品种进行再生培植,有利于获得再生稻高产

The coupling reaction of the building block in the presence of catalytic amount of palladium was investigated.

含氟砌块与末端炔烃在温和的条件下高产率地生成相应的烯炔偶联产物。

It was proved that breed big panicle or big grain erect type was a practical way to achieve super high yield

理论上阐明了以大穗型或大粒型直立穗求高产是实现水稻超高产的可行途径。

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推荐网络例句

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47:5 法老对约瑟说,你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法,同时,采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。

Hey Big Raven, The individual lies dont matter anymore - its ALL a tissue of lies in support of...

嘿大乌鸦,个别谎言的事不要再-其所有的组织的谎言,在支持。