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The correlation coefficients of 12 of the 35 meteorological factors with wheat yield were significant at the 0.05 level. The precipitation during filling stage and winter wheat yield was significantly corelated, and the direct path coefficient was the highest, and it contributed the most to wheat yield, followed by the precipitation of elongating stage and turning green period. The evapotranspiration in April and May negatively correlated significantly with winter wheat yield at the 0.05 and 0.01 levels, respectively.

在与小麦产量相关的35个气象因子中,有12个因子的相关系数达到了显着或极显着水平,其中灌浆期降水与冬小麦产量呈极显着相关,且直接通径系数最高,对小麦产量贡献率最大;其次是拔节期降水量和返青期降水量;4、5月份的蒸发量与冬小麦产量密切相关,分别接近显着和达到极显着水平,它们对小麦产量形成起较大的负向作用;小麦越冬期间的气温也是不可忽视的气象因素。

Deciduous fruit trees once again, corn stalks, stubble, etc.

清园灭虫。先清除杂草,破坏蚜虫、灰飞虱等害虫的越冬场所。

According to the emergence, PVA, mineral oil and three acaricides were sprayed during the different growing periods of Chinese chestnut use of fog machine.

根据板栗红蜘蛛发生消长规律,采用烟雾机喷雾施药,研究了聚乙烯醇、刹死倍和3种杀螨剂对红蜘蛛越冬卵和发生期螨的防治效果。

Meanwhile the acarids could overwinter in the fruits in storage and disperse and spread during the translation and commercial actions, so the quarantine should be strengthen in the areas without these acarids in order to interdict the diffusing.

该螨还可以在储存的果实上越冬,隐藏在果实的萼洼、梗洼处,随着果品的运输、销售传播、扩散,建议未发现该螨危害的果区加强检疫,防止通过流通渠道引进或输送虫源。

In the experiment, Fenneropenaeus chinensis brooders infected by WSSV were exposed to different water temperatures and the mortalities were recorded over a period of 20 days.

在不同温度下,对中国对虾越冬亲虾进行人工感染白斑综合症病毒实验,利用腹部采血和剪取游泳足进行活体取样。

The conversion of the Citadel basin, its extension and its prolongation by the channel towards the La Barre basin to constitute a new marina from 300 to 600 rings can in the long term contribute to generate a set of activities directly related to leisure sailing, wintering, maintenance, ship chandlers, and dealer sailings.

转换的城堡盆地,其扩展和延伸的渠道向香格里拉巴利盆地构成一个新的滨海由300至600环可以在长期内有助于产生了一系列活动直接有关的休闲帆船,越冬,维修,船舶,和经销商班次。

Except for Red-crowned Cranes, we found 1 Oriental White Stork, 19 Black-faced Spoonbills, 10 White Spoonbills, 5 Saunder ′ s Gulls, 400 more Cormorants, 8000 more ducks, 1500 more gulls, 500 more plovers and snipes, and 2500 more Black Coots.

本次调查,由于阴雨及涨潮,见到的丹顶鹤数量较预计少。据保护区工作人员介绍11月中旬,曾观察到1000多只的丹顶鹤和灰鹤越冬群,其中丹顶鹤有400多只。

These two records provide important evidence that the Alaska dunlins are wintering in Chongming Dongtan and fishponds are often used as their foraging ground.

这两笔记录提供了美国阿拉斯加黑腹滨鹬在崇明东滩越冬的证据,并同时反映出鱼塘作为栖息地对冬候鸟的重要性。

So. we conducted this study on seedling recruitment process and growth performance of some familiar forbs component species under different microsites (light and nutrient availability), which were made by a simulative artificially method, in alpine meadow communities of the eastern Qinghai-Tibetan Plateau.

因此,我们利用人工模拟的方法,研究了青藏高原东部高寒草甸群落中常见的杂类草组分种在不同微生境下的幼苗更新(从种子萌发到幼苗出土、存活至越冬)过程和生长(生长率、生物量积累和分配)特征。

Additionally, species with larger plasticity in biomass allocation and relative growth rate also showed higher seedling survival rate.7 All these suggested that higher light availability in grazed disturbed meadow community favor seedling recruitment for these familiar forbs component species, but bottom shade in fertilized meadow community restrain seedling recruitment for these species.

在变化的微生境下,具有较小生长可塑性的物种具有相对较大的幼苗存活率;而生物量、株高可塑性和平均可塑性较高的物种具有相对较大的幼苗越冬存活率;具有较大的生物量分配和相对生长率可塑性的物种幼苗具有相对较大的存活率。7放牧干扰下的高光照微生境有利于这些草甸常见组分种实生幼苗的更新补充,而施肥后草甸群落冠层底部的低光生境不利于这些物种的更新补充。

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