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1.过磷酸钙集中施作基肥。在移栽行开8厘米深沟,撒入磷肥后覆土4～5厘米,然后在浅沟内移栽作物,这样可以缩短磷肥与作物根的距离,提高磷素利用率。2.尿素早施、深施和根外施。根据作物发育阶段对肥水的需求,采用提前追施和深施的技术比浅施利用率提高28%,当棚温在15℃～20℃时,
1. SSP applied as a base fertilizer. In the transplanting line to open 8 cm deep ditch, drowned into the phosphate fertilizer 4 ~ 5 cm, and then transplanted in the shallow trench crops, which can shorten the distance between the phosphate fertilizer and crop roots and improve the utilization of phosphorus. 2. As early as urea, deep application and root application. According to the demand for fertilizer and water in the stage of crop development, the technology of applying top-dressing and deep-application improved the utilization rate by 28% compared with the shallow application. When the shed temperature was between 15 ℃ and 20 ℃,