ประโยคภาษาจีน : 中文句子 |
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tōng guò 通过 cháng qī 长期 dìng wèi 定位 shì yàn 试验 yán jiū 研究 le 了 jì běi 冀北 gāo yuán 高原 lì gài tǔ 栗钙土 nóng tián 农田 zhǔ yào 主要 zuò wù 作物 hào shuǐ 耗水 tè xìng 特性 jí qí 及其 dǎo chá 倒茬 xiào yìng 效应 |
Experiments were carried out in 1994~1998 to study the effects of crop rotation and crop water consumption characteristics of field with sandy chestnut soil in plateau of north Hebei province . |