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适宜的温度和水分是种子发芽的两个重要条件。温度适宜,如缺少水分,种子仍难发芽。在播种地上,如幼苗出土前后播种沟水分不足,便不利于种子发芽和幼苗出土。如果降水和地下水分布不均也不能满足苗木在全生长过程中对水分的要求。合理灌溉是培育壮苗不可缺少的重要环节。 喷灌适用于大中型苗圃。它省水,便于控制灌溉量,并能防止因水过多而使土壤产生盐渍化;比渠道占地面积少,能提高土地利用率;土壤不板结,并能防止水土流失,工作效率高,还能节省劳力。春季喷灌能提高地面温
The proper temperature and moisture are two important conditions for seed germination. Suitable temperature, such as the lack of water, seeds are still difficult to sprout. Seeding on the ground, such as seedlings before and after the unearthed seeding ditch water is not conducive to the seed germination and seedling excavated. If the uneven distribution of groundwater and groundwater can not meet the full growth of seedlings in the water requirements. Reasonable irrigation is an indispensable part of cultivating strong seedlings. Sprinkler suitable for medium and large nurseries. It is water-saving, easy to control the amount of irrigation, and prevent the soil salinization due to excessive water; less land area than the channel, can improve land utilization; soil does not form a knot, and prevent soil erosion, high efficiency , But also save labor. Spring sprinkler can increase the ground temperature