氮素利用效率与作物生育期降水量有很大关系。
Nitrogen using efficiency mainly relates with precipitation during crop growth stage.
气候变化会引起农业气候资源的变化，气候资源的变化又会导致作物生育期长短的变化。
Climate variation results in the change of agriculturally climatic resources and their variation affects the change in the crop growth period (CGP).
应用分形理论研究了黑龙江省各县市1984-1999年主要作物生育期（4-9月）降水的变化特点。
The characteristics of precipitation changes during growing periods of main crops in 79 counties and cities of Heilongjiang Province from 1984 to 1999 was studied by using the fractal theory.
建立了主要作物生育期钟模型模式，反映作物生长发育随气候的动态变化，并将生育期与气候生长季进行对比分析，实现生长季适应性评估；
"clock" models for growing period of crops were established, which reflect dynamic change in growing period of crops with climate, and analyze the crop requirements to climate tondition;
采用不同播种方式，对油菜作物的生育期及产量影响各异。
Adopt different ways of sowing, and yield influence is different in the breeding time of rape crop.
本文拟合了玛纳斯河流域典型作物(棉花)的全生育期水分生产函数及阶段作物水分生产函数。
This text fits the whole production function of the moisture and moisture production function of the crop of stage of the typical crop (cotton) of Manas river valley.
单作物系数法比双作物系数法简单，建议在进行生育期作物需水量计算时采用单作物系数法；
Single crop coefficient approach is simpler than dual crop coefficient approach. It is suggested to using single crop coefficient approach for calculating crop water requirements of growth stages.
储水灌溉在北方灌区被普遍应用，目的是将秋冬季多余的水分储存于土壤，供作物来年生育期利用。
In the northern China, water-reserving irrigation technology is widely used to store excess water during autumn and winter periods in soil for crop use next year.
由于棉花是直根系作物，根系生长庞大、生育期长，与果树的生长有一定的相似性。
The cotton is similar to fruiter because the cotton roots is taproot and hugeness and growth days is long.
随生育期推迟，两种作物叶片吸收N的回收利用率均明显提高。
There was very similar tendency for the two crops that the 15N recovery rate taken up via leaves was apparently increased as delay of application period.
干旱是人类所面临的最严重的自然灾害之一，干旱导致水稻生长发育严重受阻，生育期显著减慢，造成农作物减产。
Drought is one of the most severe natural disasters, drought has caused serious disruption to the growth and development of rice growing period significantly slowed, resulting in crop failures.
该系统针对河南省主要的农作物——冬小麦、夏玉米和棉花进行全生育期“适宜”和“灾害”气象指标的浏览查询。
The system could browse or query the "fitting" and "disaster" index in whole grow phase of winter wheat, summer maize and cotton in Henan.
全生育期内，作物蒸腾与棵间土壤蒸发比例平均为2.06左右，最大值出现在挑旗期，最小值在越冬期间，接近于0。
Theaverage of T/Es during the whole stages was about 2.06. The maximum of it appeared in Flag stage was about 7-8, and its minimum appeared in winter was close to zero.
全生育期内，作物蒸腾与棵间土壤蒸发比例平均为2.06左右，最大值出现在挑旗期，最小值在越冬期间，接近于0。
Theaverage of T/Es during the whole stages was about 2.06. The maximum of it appeared in Flag stage was about 7-8, and its minimum appeared in winter was close to zero.
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