And Crop canopy and height are determined by the total rainfall in the growth season.
农作物覆盖度、高度甚至每年播种日期和种类都受到生长季降雨量的制约。
It was testified by pot test and cultivation experiment that applied boron to soil in this season could not be extracted fully by hot water, and this boron was available to crop growth in next season.
盆栽试验和培养实验都证明热水不能完全提取当季施入土壤中的硼，而这些硼在后季作物生长中继续发挥效果。
Selecting the proper classification features, the primary crop types in North China could be identified through the analysis of the vegetation index time series in growth season.
通过对作物生长期内植被指数变化曲线分析，选择合适的分类特征，进行华北地区主要作物类型识别。
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