春季

According to the habitat types, weed species can be induced into 5 species groups. In the edge habitat, species were almost perennials which can endure dankness. In abandoned habitat with debris, species were tall perennials of Compositae. In abandoned habitat with soil, species were almost annuals which can endure leanness. Short-lived species appeared in spring in the habitat with human disturbance taking no care of environment effects. Species which can endure trampling were prostrate perennials

林下—林缘型种组所包含的物种多是多年生耐阴湿物种；废弃空地型种组所包含的物种多是多年生菊科高茎草；废弃空地型所包含的物种多是一年生耐贫瘠物种，亦有草质藤本葎草；春季短寿命型种组所包含的物种多是冬季一年生物种，在春季短时间占据生境，不能很好地体现生境特征；耐践踏型种组所包含的物种多是多年生匍匐、耐践踏物种。

Treatment of Severe Vernal Keratoconjunctivitis with Topical FK506 Objective: To evaluate the effect of FK506 eyedrops on the clinical course and the symptoms of severe vernal keratoconjunctivitis.

FK506局部治疗顽固性春季角结膜炎目的评价FK506滴眼剂对顽固性春季角结膜炎的治疗效果及安全性。

Phenological data of 20 ligneous plants in Xi'an botanic garden from 1988 to 2002 was analyzed. The results showed that the spring phenological phenomena of all observed 20 ligneous plants had been earlier since 1988, while the autumn phenological phenomena of most observed 20 ligneous plants had been delayed. The response of the spring phenological phenomenon to the climate change was more obvious than that of autumn phenological phenomenon.

通过对1988-2002年西安市植物园20种木本植物物候资料的分析，结果表明：近十余年西安市植物园20种木本植物物候变化趋势明显表现为所有植物春季物候逐年提前、大多数植物秋季物候逐年推迟的趋势；春季物候对气候变化的响应程度显著大于秋季物候，大多植物生殖生长期的物候变化幅度大于营养生长期。

The results show that the phenological periods of ligneous plants occurred earlier with increasing temperature in spring; on the contrary, the ligneous plant phenological periods delayed with decreasing temperature.

结果表明：平均温度上升，木本植物春季物候期提前；平均温度下降，木本植物春季物候期推迟。

The present study investigatated the effect on the diversification of weed community, including weed abundance, dominance, evenness, biomass, and mean height after mulching straw and intercropping white clover in the tea plantation from 2005 to 2006. The results were as follows: 16 families and 31 species were found in total. In April, the dominant species characterized with slow growth, lower biomass, and less than 30 cm height; in July those who grow faster with higher biomass and height became dominant; In September, these malignant communities reduced, while the oxalis and diffusa characterized with lower biomass and low height gradually increased. In the three seasons, the weed abundance, community diversity and evenness increased, and the dominance, the biomass and average height of weeds remarkably reduced after intercropping white clover and muching straw.

结果表明：茶园共有杂草16科31属31种，春季（4月）以生长速度较慢、生物量小、株高在30 cm以下的杂草为主，夏季（7月）以生长快、植株高和生物量大恶性杂草为主，秋季（9月）恶性杂草开始减少，酢浆草、白花蛇舌草等生物量小、株高矮的杂草逐渐增多；稻草覆盖处理茶园春、夏和秋季3个观测时期杂草物种丰富度、多样性、均匀度等指数均高于清耕对照，优势集中性指数低于清耕对照；间种白三叶草处理春、夏和秋季3个观测时期杂草总数量和生物量均显著低于清耕对照，夏、秋季杂草平均株高显著低于清耕对照；稻草覆盖和间种白三叶草处理春季茶芽重和产量显著高于清耕对照，鲜叶中游离氨基酸含量高于清耕对照，茶叶感官评审得分高于清耕对照处理。

The main conclusions indicated that NDVI values seemed to be turning up in the area during recent 22 years (1982—2003). That suggested the vegetation cover was improved in Guizhou. The NDVI increased in the spring and autumn and decreased in the summer and winter. The spring made the largest vegetation contribution in all seasons. Vegetation cover was different from the area and the variation was positive in the central area but negative around the edges of Guizhou.

结果表明：22年来，研究区植被覆盖呈增加趋势，表明贵州省植被生态环境向好的方向发展；贵州省平均植被覆盖在春季和秋季呈上升趋势，夏季和冬季呈下降趋势，其中春季对植被覆盖总变化量的贡献最大；植被覆盖程度增减因区域不同而异，变化程度呈增加的区域主要位于贵州省的中部地区；变化程度呈减小的区域分布在贵州省的四周边缘。

N-50°N, 110°E-145°E and that of the rainfall in each month, there issignificant positive correlation between interannual variation of former low level atmospheric circulation and that of the rainfall in Spring and May.

华北春季、5月降水的年际变化与前期低纬大气环流的年际变化有显著的正相关关系：当西太平洋-印度洋上空2-3月200hPa位势高度正异常时，西太平洋副高偏强、偏西，华北存季降水年际、年代际变化及其成因，华北春季、5月降水偏多。

The contents of β2-microglobulin in vernal conjunctivitis patients were in activated secretor state, which has positive significance in exploring the pathogenesis and guiding the therapy of vernal conjunctivitis.

春季卡他性结膜炎急性期β2 -微球蛋白处于高度活化分泌状态，对探讨春季卡他性结膜炎的发病机制和指导治疗具有积极意义。

Because of the regional difference of soil and climatic conditions, the division of 4 stages of soil moisture circulation is not all the same between different areas; the soil moisture dynamics between different dry farming areas in the Yellow River Basin is contrasted in this report. The results indicate that soil moisture increases gradually from dry semi-arid area to semi-arid area, dry semi-humid area and semi-humid area, and the high value district generally appears during soil moisture resuming period in rainy season or soil melting period. While the low value district appears at the stage of fast evaporation in spring or slow evaporation in autumn; in views of vertical changes of soil moisture, it is showed that the variation range of upper lays is larger than that of lower among the different dry farming areas in the Yellow River Basin.

由于各区域之间土壤、气候条件的差异，各地土壤水分循环4个阶段的划分也不尽相同；黄河流域不同旱作类型区土壤水分动态变化比较结果表明：就季节变化而言(来源：A70b0B0bC论文网www.abclunwen.com)，由半干旱偏旱区→半干旱区→半湿润偏旱区→半湿润区土壤水分含量呈逐渐增加的变化趋势，而且高值区一般出现在雨季恢复阶段或春季土壤融冻返浆时期；而低值区均出现在春季大量蒸发阶段或秋季缓慢蒸发阶段；就垂直变化而言，黄河流域不同旱作类型区土壤水分垂直变化的趋势均表现为上层变化幅度较下层大。

In 1980s, HFRS additionary occurred in spring season, the diseased cases and the dead cases accounted for 42.78%and 21.73%of that of the whole year respectively, the endemic area expanded to 14 areas where the mixed infection of Hantaan virus and Seoul virus were found. In 1990s, the diseased cases and dead cases were 43.68%and 37.55%of that of the whole year respectively, mixed infection of Hantaan and Seoul virus was found.

结果表明：山东省在60年代和70年代HFRS发病以秋冬季（10月～翌年1月）为主，其发病数占全年发病数的89.87％，病死数占全年的88.99％；疫区限于6个地区，疫区型别为姬鼠型。80年代，除秋冬季发病高峰外，出现春季（3～6月）发病高峰，其发病数和病死数分别占42.78％和21.73％；疫区扩大至全省14个地区，疫区型别为姬鼠型和家鼠型的混合型。90年代情况与80年代类同，春季发病与死亡数分别占全年的43.68％和37.55％；疫区型别仍为混合型。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。