The result shows: these method are high efficient and low cost rapid method on producing virus-free potato.
结果表明这些新方法是高效、低耗、快速繁殖脱毒薯的有效方法。
We study potato tube's virus-free method and rapid production method of virus-free plant virus-free potato.
即对马铃薯块茎的脱毒方法、脱毒苗脱毒种薯快速繁殖的方法进行研究。
So it was necessary to use virus-free potato plants to produce virus-free seed potato through stem-tips tissue cultivation.
利用茎尖组织培养便可获得无毒或不带某些病毒的植株，进而生产脱毒种薯。
The temperature, illumination intensity and nutrition liquid concentration for the nutrition liquid culture technology of virus-free potato tube plants were researched.
对马铃薯试管苗液体培养过程中所需的温度、光照、营养液浓度等条件进行了研究。
The results showed the mass photosynthetic rate, mass leaf source amount, dry matter weight, leaf areas weight and index of virus-free potato were superior to that of potato.
结果表明：脱毒马铃薯的群体光合速率、群体叶源量、干物重量、叶面积重量、叶面积系数均优于未脱毒处理。
There is the reward decrement relationship between K amounts from organic and inorganic fertilizer and yield of virus-free potato, and the reciprocal effect presents a negative value.
在满足氮、磷营养元素需求的前提下，有机肥与无机肥所含的钾，对脱毒马铃薯产量均呈报酬递减率关系，交互效应呈负值。
The techniques included new methods to identify viruses in sweet potato roots, and better systems for multiplying improved virus-free plant varieties.
这些技术包括辨认甘薯根内病毒的新方法以及扩大经改良无病毒作物品种的更好方法。
Virus - free sweet potato and virology biotechnology product of the combination of technologies.
脱毒甘薯是生物技术与病毒学技术相结合的产物。
The major and efficient way to promote potato yield and control the degradation of potato seed tubers in the world is to use the virus-free seed tubers propagated via shoot meristem culture.
采用茎尖分生组织培养脱毒，繁殖、使用脱毒种薯是目前世界上解决种薯退化、提高单产的有效和主要途径。
Therefore, virus free potato has a higher energy utilization efficiency and more accumulated photosynthate which are of benefit to high yield.
因而，脱毒马铃薯光能利用率高，积累的光合产物多，有利于高产。
In this paper the high efficient technology of virus free minituber production of potato under cold condition in the cold area of northwestern Hebei was studied.
试验研究了在冀西北高寒区冷凉气候条件下脱毒微型薯的高效生产技术。
The experiment studies on virus-free seed potato miniaturization breeding system and matching commercial potato cultivation techniques .
本文研究了冀中南地区马铃薯脱毒种薯小型化繁育体系和配套商品薯栽培技术问题。
The significant yield increase of virus-free sweet potato mainly resulted from its strong growth vigour, early formation of its tuber, increase of big tuber in number and weight in harvest period.
生长势强、结薯较早、收获期大薯的数量和重量显著增加，是脱毒甘薯能显著增产的主要原因。
Virus free potato seedlings from tubes: Kexin No. 4 and Zaodabai were used as experimental materials. The effect of illumination and medium type on potato micro-tuber inducement were studied.
以克新4号、早大白脱毒试管苗为材料，研究了光照和培养基类型对马铃薯微型薯诱导结薯的影响。
Virus free potato seedlings from tubes: Kexin No. 4 and Zaodabai were used as experimental materials. The effect of illumination and medium type on potato micro-tuber inducement were studied.
以克新4号、早大白脱毒试管苗为材料，研究了光照和培养基类型对马铃薯微型薯诱导结薯的影响。
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