磷肥在青紫泥地区,对旱作增产效果显著,对水稻一般也有效。1976 年我们分别在秧田和大田中,进行了旱稻、后季稻的磷肥肥效试验,在基肥中每亩各增施过磷酸钙50斤,以邻近不施磷的田块作对照。供试品种:早稻有中熟原丰早,晚熟广陆矮四号,后季稻为晚粳嘉湖四号。 Phosphorus fertilizer in the purple area, the effect of drought on the yield significantly, the rice is generally effective. In 1976 we were in the seedling and field were carried out in the Upland rice, the latter part of the phosphorus fertilizer efficiency test, in the basal fertilizer per acre increased by 50 kg of calcium phosphate, to the adjacent fields without phosphorus as a control. Test varieties: early rice maturing in the early abundance of abundance, late-maturing Guanglu dwarf fourth, late rice for the late japonica Jiahu four.