高床和垄式作业区，可由灌溉渠把水引入步道或垄沟里，水从侧面渗入床内或垄中。其优点是灌溉后土壤仍具有良好的通气性，可以减少松土的次数，也比较省工，但耗水量太大，苗床宽的会产生灌水不均的现象。 低床或大田式育苗区，可由灌溉渠把水直接引入低床或畦面，水布满床面或畦面而逐渐深入土壤之中，这是漫灌。此法灌水时比较方便，但应注意水流速度要慢，以免冲倒或淹没苗木。灌溉后土壤易板结，通气不良，要增加松土次数？比较费工。 2.喷灌和滴灌 喷灌一般适用于大苗灌溉，滴灌适用于苗床灌溉，都是比较先进的灌溉方式。 High bed and ridge type operation area, the irrigation canal brought water into trails or furrows, water from the side into the bed or ridge in. The advantage is that the soil is still well ventilated after irrigation. It can reduce the number of loosen soil and save labour, but the water consumption is too large. The wide seedbed will cause uneven irrigation. Low bed or field seedling area, by the irrigation water directly into the lower bed or ridge surface covered with water, bed surface or surface gradually into the soil, it is flooding. This method is convenient for water irrigation, but it should be noted that the speed of water flow should be slow so as to avoid flushing or drowning the seedlings. When the soil is irrigated, the soil is easy to be consolidated and the aeration is bad. Comparison of labor. 2. sprinkler sprinkler irrigation and drip irrigation is generally applicable to seedling irrigation, drip irrigation for bed irrigation, are relatively advanced irrigation methods.
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