干旱

Drought, cold and snow are the proximate causes of this season's widespread misery.

干旱、寒冷和大雪是造成目前普遍感受苦难的最直接原因。

The results showed that length from flag leaf pulvinus to spike base has the largest coefficient of variance of 42.1% and 37.2% in both DS and WW environments, respectively, while the spikelet per spike has the smallest CV of 6.4% and 5.7%. Under different water regimes, spike number per plant, effective spikelet per spike and peduncle length contribute a lot to the stable grain yield. Genetic diversity indices of DTI were from 1.95 to 2.07, with an average value of 2.02. Based on the DTI of agronomic traits, all accessions could be clustered into seven groups, the first and third groups are not sensitive to the water regimes, and the second group is more suitable for planting in dryland.

结果表明：在雨养和灌溉条件下，穗叶距的变异系数最高，分别为42.1%和37.2%，单穗总小穗数的变异系数最低，为6.4%和5.7%；不同水分条件下，植株稳产性主要受单株穗数、有效小穗数及穗下节长的影响；性状耐旱指数的多样性指数在1.95到2.07之间变化，平均值为2.02；根据性状耐旱指数将供试材料分为7个类群，其中第I、第III类群材料表现为对水分条件不敏感，而第II类群材料更适于在干旱条件下种植。

The above results indicate that exogenous Putrescine could improve osmotic adjustment ability of winter wheat seedling leaves under drought stress and increase drought tolerance of plant.

这说明外源腐胺能改善冬小麦幼苗叶片干旱胁迫下的渗透调节能力，从而增强植株的耐旱性。

The germination and growth of alfalfa and wheat seeds was inhibited evidently with increase of oil concentration, the dry weight of their root or radicel decreased regularly with the increase of oil concentration and can be used to judge the degree of oil pollution of soil.

菌根化植物的矿物油降解率及抗干旱、抗低温能力明显增强，并可持续发挥有益作用，第二年某些共生组合可使油浓度降至正常水平。

Uneven distribution of rainfall season, winter and spring drought, summer and autumn rainfall and more.

降雨季节分配不均匀，冬春干旱，夏秋雨量多。

But due to the complex of natural condition, the un-uniform distribution of rainfall, and the change to ecoenvironment resulted from long-term activities of human being, drought disaster always happens in the region.

然而，由于地形地貌、气候条件的复杂多变，降水的时空分布不均，以及人类的长期干预造成的生态环境的改变，致使该区连年干旱。

At the same time, rainfall levels began to rise after a long dry period.

与此同时，在一段长时间的干旱后，降雨量开始增长。

In the West, I see more droughts, and water rationing.

在西部，我看见了更多的干旱和水定量配给。

The results showed that G1 had obviously stronger ratoon ability after drought stress compared with Zhejing 20 and IAPAR-9,such as earlier-occuring of ratoon tiller,higher ratio of total ratoon tillers compared with total tillers before treatment.

结果表明，G1旱后再生能力明显强于亲本浙粳20和巴西陆稻IAPAR-9，表现为再生苗发生早，总再生苗数占干旱处理前总分蘖数的比例高。

The conclusion show as followings: Based on parameter recension of EPIC model, the correlation coefficient between simulated alfalfa forage yield and root zone soil water with observed value were 0.8957 and 0.9884, the correlation coefficient between simulated A.

2半湿润区紫花苜蓿30年的水分生产潜力模拟值为4.262～13.456t/hm~2，根层有效水含量在第8年达到极低值，受土壤水分降低的影响，苜蓿的水分生产力水平开始降低，干旱胁迫日数开始加重，且分别与当年和前一年的降雨量成正相关和负相关变化。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。