根的生长

Nicrate nitrogen and phosphate in liquid medium were quickly consumed at the lag phase of the growth, the consumption rate was 16.71 μ g/ml d and 1.67μ g/m d, respectively; but during the rapid-growth phase, its consumption rate was decreased.

在毛状根生长迟滞期内，培养基中的硝态氮和磷酸盐的消耗较快，其消耗速率分别为16.71 μg／ml·d和1.67μg／ml·d；但在快速生长期，其消耗速率反而减慢。

Deserticola showed polarity, with the micropyle cells being smaller than the chalazal ends and differentiated into white radicle-like organs.

肉苁蓉种胚具有明显的极性，珠孔端细胞小于合点端，珠孔端细胞分化、生长并产生白色的类胚根状结构。

Davidii seedlings. Two-month-old seedlings were grown under water supply regimes of 100, 80, 60, 40 and 20% water-holding capacity, respectively, in an open-sided greenhouse.

结果显示，胁迫处理96d后，100% WHC条件下白刺花幼苗的总叶面积、分枝数、基径及最大根长等均最大；80% WHC对幼苗产生了轻度胁迫，随着干旱胁迫强度的进一步增加，幼苗生长显著减小。

In damaged stems and roots, and in those undergoing secondary growth, it is replaced by a secondary layer, the periderm.

已损伤的茎和根，以及进行次生生长的根茎中，表皮被次生层即周皮代替。

The study was to provide a reference with the application of SAP and promoter in cotton production.

探讨保水剂和促根粉对棉花生长发育的影响，为其在棉花生产中的应用提供参考。

The inhibiting effects on cucumber radicle growth of the four glycoalkaloids isolated from solanum plants were evaluated.

本文检测了分离自茄属植物的四种糖苷生物碱对黄瓜幼根生长的抑制作用。

Coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico.

生长于美国西南部和墨西哥干燥贫瘠土地的粗糙的多年生豚草，有匍匐根。

The rhizosphere is the narrow region of soil that is directly influenced by roots and associated soil microorganisms.

根际微生物是指在植物根系直接影响的土壤范围内生长繁殖的微生物。

In the 50 cm plough layer per m2 area, the total rootstalk weight of L.

结果表明：赖草株高45~120 cm，单生或丛生，具下伸土壤30~50 cm耕层间有横走根群，每平方米内，深50 cm耕层内赖草根茎总重量为1129.3 g，根茎总长度为2783.3 cm，根茎上的新芽589.7个，使土壤严重缺水，肥力下降；土壤水分在13.4%左右时，对出苗影响不大，对生长发育有很大的影响；气温在-6~6℃，根茎萌发出土，高峰期为4月上旬，平均单株结种量为468.4粒；每平方米内有赖草120~160株时，大黄产量损失达15.8%~17.8%；田间每平方米内有赖草1株时，采用人工或机械深耕捡出地下根茎，减轻翌年危害来源。

Sagitta and L. virgaurea were suppressed due to interspecific competitions on the grassland, therefore the reproduction of the two plants mainly dependen on seeds.

箭叶橐吾和黄帚橐吾，在自然条件下，其克隆生长的根状茎，受到了草场其它生物的竞争而被抑制，主要进行有性生殖。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。