德伏夏克:《斯拉夫舞曲》两套

在两套《斯拉夫舞曲》中,德伏夏克努力表现出斯拉夫多民族音乐文化的一致性,这种一致性是他们自古以来的共同历史所带来的直接结果。它们各包含八首舞曲,第一套(op.46)创作于1878年,第二套(op.72)创作于1886年,最初都是为钢琴四手联弹而写,以后才由作者编配,供大型交响乐队演奏之用。

郸城县1994年伏夏干旱分析

１９９４年郸城县伏夏旱时间长，危害重。分析历史上的干旱年份发现：严重伏夏旱出现的年份均是连续两年；伏夏旱出现的年周期正在变短；干预旱程度越来越严重．为防御干旱，除加强农田水利基本建设外，应加强长期天气预报．在可能出现干旱的年份，选种耐旱作物．早灾发生后，有些作物遇雨还能结实；旱死或未死而不能结实的作物，可种速生绿豆等作物。

关于农业旱涝指标的研究

本文试图从农田水分平衡观点出发,根据作物生长季节的需水量与同期可供水分的关系,建立了一个农业气象学的旱涝指标。

山居八首

甲子伏夏,偕蒋华挈儿孙应中共乐平县委邀,到(山乐)崌山垦殖场度假二十日。

Effects of Different Row Spacing and Planting Density on the Main Agronomic Characters and Yield of a Maize Variety Xianyu 335

A field test was conducted to investigate the effects of different row spac- ing and planting density on grain filling rate, yield and other agronomic characters of a maize variety Xianyu 335, thereby determining the optimum planting density for maize in the Huang-Huai-Hai region. The results showed that the grain filling rate of Xianyu 335 was tended to decrease with the increase of planting density, and un- der the same planting density, the grain fill row spacing. Under the planting density of spacing showed little effect on the kernels ng rate decreased with the increased 60 000 plants/hm2, changing the row per spike of Xianyu 335; under the planting density of 75 000 plants/hm2, with the increase of row spacing, the kernels per spike of Xianyu 335 decreased; and under the condition of same row spacing, the yield of Xianyu 335 under the planting density of 75 000 plants/hm2 was higher than that under the planting density of 60 000 plants/hm2. The yield of Xianyu 335 reached the highest level at the row spacing of 50 cm and （40 ＋ 80） cm.

假

伏夏,晌午的大阳特毒,柏油路上闪着灼眼的亮光,树叶儿也打着卷儿。 他坐在信用社门口叭哒叭哒啃着西瓜,汗珠子顺着黑脸膛滚下来,摔在地上和瓜汁融在一起。 这时有个挎着包的“大胡子”犹犹豫豫走进营业大厅。 见鬼!他心里暗骂一句,抹一把汗,仍大口大口啃着西瓜。 一老头不小心踏着西瓜皮摔倒在地,惹得对面的娘儿们一阵哄笑。 他懒洋洋地回到办公桌前,斜了“大胡子”一眼:“