通过田间示范得出，膜下滴灌节水效果最好，其次是喷灌、再就是管灌。
The results from the demonstration fields show that drip irrigation under mulch is the best way for saving water, spraying irrigation the second, then piping irrigation.
通过田间试验、田间示范和室内分析，筛选出4号肥为向日葵专用肥的最佳配方。
Through field experiment, field demonstration and chemical analysis, we sifted out the fertilizer No. 4 to be the best compound fertilizer specially used for sunflower.
通过田间试验、田间示范和室内分析，筛选出4号肥为向日葵专用肥的最佳配方。
Through field experiment, field demonstration and chemical analysis, we sifted out the fertilizer No. 4 to be the best compound fertilizer specially used for sunflower.
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