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Koelreuteria paniulata seeds treatent in damp sand were discovered different in absorb water that were divided into two "soft seeds" and "hard seeds".

对栾树种子进行处理和育苗试验，结果表明，不同栾树种子在砂藏过程中种子吸水率相差很大，据此将其分为&软实&和&硬实&两种种子类型，随着栾树种子砂藏时间的延长软实率逐渐提高。

Result In 5 kinds of chemical treatments, treating Z. macrostachya seeds with 20 % NaOH solution for 20 min and then cleaning the seeds with clear water got the best effect of breaking seed dormancy. By this treatment, the seed germination potential reached 83.5% in 10 d, being 58.2 % higher than CK; reached 85 % in 15 d, being 55 % higher than CK, which was near to the potential germination rate of Z. macrostachya seeds. Compared with CK, the germination duration was obviously shortened.

结果］在5种化学处理中，用浓度20%NaOH溶液处理大穗结缕草种子25min，再用清水清洗，对解除种子休眠效果最佳，10d发芽势达83.5%，比对照高出58.2百分点，15d发芽率达85%，比对照高出55.0百分点，已接近大穗结缕草种子的潜在发芽率，发芽历时比对照明显缩短。

But when we examined the structure of cultivar of D. huoshanense, endomycorhiza was founded unexpectedly. And in the wild type of D. huoshanense, fungi was also founded in its stems and leaves. So the author thought that endomycorhiza is not only located in the roots of Dendiobium plants, but also exists in other organs of plants, including stems, leaves. As plant produces seeds, mycorhiza could enter into the cells of seeds. When mature seeds germinate in media, the endomycorhiza enter into the roots of cultivar.

石斛属植物与真菌共生，根为菌根，作者在研究霍山石斛组织培养型结构时发现，组织培养苗的根部也分布有真菌，而且在野生霍山石斛的茎、叶中发现有真菌，作者因而指出，真菌并不是完全分布在根部，而是遍布于整个植物体，推测植物形成种子时，真菌进入种子，所以在组织培养时，真菌随着种子的萌发，进入植物体根部。

I planted seeds of the Nierembergia variety "Blue Mountain" that is available from Park Seed Co. Seeds of the "White Robe" and "Purple Robe" varieties are available from Stokes Seeds.

我种的种子在Nierembergia品种&蓝山&，也就是可以从公园种子有限公司种子的&白色长袍&和&紫色长袍&品种可从斯托克斯种子。

ResultsThe poisoning induced by seeds of pachyrhizus erosus was based on the fact that 4 related children, 3 poisoned with the behavior of eating the seeds of pachyrhizus erosus, 1 did not poison without eating the seeds of pachyrhizus erosus; and confirmed by laboratory t...

结果同玩耍的4名儿童中有3名儿童误服地瓜米，均发病，1名未服者未发病和实验室检测排除毒鼠强等农药中毒，而确认是一起食用地瓜米引起的中毒事件。结论地瓜米食物中毒必须引起人们的高度关注和高度重视。

Water uptake by seeds rapidly increased with imbibition, and did not exhibited a typical triphasic pattern of water uptake. Rate of electrolyte leakage and relative leakage from seeds dramatically increased up to 3 h of imbibition, and then declined. The time and thermal time required for 50%germination seeds were 5.5 h and 7 degree days, respectively.

在吸胀过程中，种子含水量迅速增加，不表现出典型的吸水三阶段模式；种子的电解质渗漏速率和相对电导率显著增加直到3 h，然后下降。50％种子萌发需要的时间和热时间分别是5.5 h和7℃d。

The results showed that the seed germination rate decreased gradually as the NaCl concentration increased .The seed germination rate and imbibition rate was lowest when the seeds were treated with 200 mmol·L~(-1)NaCl; the recovery rate of ungerminated seeds in 150 and 200 mmol·L~(-1)NaCl had no significant difference with the control and it was more higher than the seeds in100 mmol·L~(-1)NaCl.

的种子，逐日测定萌发率、吸胀率；5 d、10 d后测定种皮和种胚的Na~+、K~+含量；培养15 d后，将含有NaCl的营养液中未萌发的种子分别转入1/4 Hoagland营养液继续培养，测定解除盐胁迫后种子萌发的恢复率；以探索不同浓度的NaCl处理对海滨木槿种子萌发及其种皮和胚的Na~+、K~+含量的影响。

Persicum when seeds were submerged in 700 mmol.L-1 NaCl solution, especially for recovery germination and total germination when ungerminated seeds were air-dried and then transferred to distilled water, while these were increased markedly when seeds were submerged and aerated in 700 mmol.L-1 NaCl in H.

与囊果碱蓬和梭梭相比，自梭梭种子在700 mmol·L~(-1) NaCl浸泡后种子萌发率、恢复率和总萌发率都很低，尤其是未萌发种子风干后的恢复率和总萌发率更低。

In order to study the effects of salt treatment with different NaCl concentration on the seed germination and the content of Na~+ and K~+ in the seed coat and embryo of Hibiscus hamabo Sieb.et Zucc., the seeds were cultivated by 1/4 Hoagland nutrition solution with 0, 50, 100, 150 and 200 mmol·L~(-1) NaCl, the germination rate and imbibition rate were measured every day, the content of Na~+ and K~+ in seed coat and embryo was determined when the seeds were treated for 5 and 10 days respectively; and after 15 days , the ungerminated seeds in 1/4 Hoagland nutrition solution with NaCl were cultivated by 1/4 Hoagland nutrition solution without NaCl.

用NaCl浓度为0、50、100、150和200 mmol·L~(-1)的1/4 Hoagland营养液培养海滨木槿Hibiscus hamabo Sieb.et Zucc。

When the mevinphos was utilized for a long time in highland barley field, the young-root of next-season cole shortened 1.9~2.0cm and fresh weight decreased 0.13~0.14g per individual plant compared with the control. Low-tillage in time after autumn-harvest showed that the weed seeds in the ground surface were harrowed into the tilth of 0~10cm. Early-low-tillage in spring-sow of the next year induced weed seeds of soil surface to germinate and come out ahead. After 10 days, tillage-sow can decrease about 40% weeds. Compared to the normal plough-row, direct late-tillage-row was postponed 10 days, and can decrease about 30% weeds. In the seedling period or later, rudimental weed seeds were handled with a hoe, which led to better cure and control effects and had more benefits to the young seedling growth and yield of the next-season crop.

研究结果表明：氟乐灵在油菜田长期使用时，土壤残留农药抑制下茬青稞幼根生长，幼根较对照株缩短3.0~3.1cm/株，鲜重量减少0.19~0.20g/株；甲磺隆在青稞田长期使用时，下茬油菜幼根较对照株缩短1.9~2.0cm/株，鲜重量减少0.13~0.14g/株；秋收后及时浅耕可将落入地表的杂草种子全耙入0~10cm耕层内；翌年春播早浅耕可诱发土壤表层的杂草种子提前萌发出苗，10d后耕种，能防除40%左右的杂草株数；较正常播种期推迟10d后直接晚耕播种，可防除30%左右杂草株数；苗期或后期拔出残余杂草种子时，除草效果理想，对下茬作物幼苗生长发育及产量无任何不良影响。

Objective: To study the effect of polycythemia on blood oxygen saturation.

裴蕾目的：观察RBC剧增而引起的高粘血症对血氧饱和度的影响。

Based on SIMPLER algorithm in the curvilinear body-fitted coordinates, the calculations were performed for Pr=0.7, Re=10~1000 on non-orthogonal non-staggered grids which are generated by elliptic equation systems.

采用曲线坐标系下压力与速度耦合的SIMPLER算法，数值研究了周期性渐扩渐缩波纹通道内脉动流动与换热情况，流动Re数的范围为10~1000，Pr数为0.7。