1) the index of black dot disease
黑点病指数
1.
Results show that the bag permeability remarkably affect the index of black dot disease,the contents of total acids and heavy metal Pb of apple.
选择9种代表性的双层果袋进行试验,果实采收后10 d内对果实各项指标按GB10651-1989进行检测,结果发现:果袋的透气性对苹果果实黑点病指数、总酸含量及重金属Pb含量有显著影响。
2) black-dot disease
黑点病
1.
Studies on the occurrence and sensitivity to the chemicals of black-dot disease of bagged apple;
套袋苹果黑点病发生规律及其对几种化学药剂的敏感性
2.
Researches on black-dot disease of bagged apple in Shaanxi showed that the disease started in early July,become serious in the early and middle of August and reached peak by the end of August.
研究了陕西果产区套袋苹果黑点病发生规律。
3.
It has been made clear that the occurrence regularity of black-dot disease of bagged apple in Shaanxi according to the experiments conducted from 2000-2003.
经过5年的研究,初步明确了陕西苹果产区套袋苹果黑点病的病原菌及病害的发生规律。
3) Petiole spot
小黑点病
1.
The Effects of Gene Type on the Occurrence of Petiole Spot in Chinese Cabbage and Resistance Varieties Screening;
基因型对大白菜小黑点病发生的影响及抗病品种筛选
4) red and black scar
红、黑点病
1.
To control the red and black scars on the surface of the apples by using plasfic film bags is to take the following comprehensive measures:strengthening the planting management,adding more fertilizer,increasing Ca in soil,improving the condition of wind and sun light between the trees,selecting non -static electricity plastic film bags,bagging in time,adjusting humidity in bags and bacterium from.
为提高套袋苹果果面红、黑点病的防治效果,进行了综合防治试验。
5) black spot
黑点<纸病>
6) black ash spot
黑点(纸病)
补充资料:迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中,}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100,如某一地区的值越大,反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂,则: }艺材。一芝Mj、}EIM汀艺。+乏M,(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二,么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中,M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I,j为迁移偏好指数。通过计算迁移偏好指数,可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如,专业技术人员的人数所占比重,各种文化程度人数所占比重等,以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中,M为迁移人数;M,为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
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参考词条