围垦利用海涂,可以迅速扩大沿海地区的耕地面积。要使新围涂地迅速成为高产稳产农田,一定要就地解决有机肥源。我省新垦区采取的办法是:(一)新垦荒地用短期泡洗和播后覆盖的办法,可直接种植黄花苜蓿。新围沙性涂地,未经垦种植物,盐分大量集中于上层,经短期泡洗(4—8天),可将盐分洗去,然后开沟条播黄花苜蓿,再以稿秆覆盖,可以保证苜蓿成苗生长。如果只泡洗不覆盖,因土壤返盐,不能出苗。(二)新围涂地种稻后,可套播黄花苜蓿。稻田套 Reclamation using tidal flat, you can quickly expand the arable land in coastal areas. To make the new wall quickly become a high-yield farmland, must be solved on-site organic fertilizer source. New reclamation areas in our province to take the approach is: (a) reclamation wasteland with short-term bubble washing and sowing coverage can be directly planted alfalfa. The new enclosing the sand Tu Tu, not reclaimed species of plants, a large number of salt concentration in the upper, short-term bubble washing (4-8 days), the salt can be washed away, and then ditched sowing alfalfa, and then covered with draft, you can Ensure alfalfa seedling growth. If only bubble wash does not cover, because the soil back to salt, can not emerge. (B) the new enclosure to cover the rice, you can nest broadcast alfalfa. Paddy field sets