磷石膏在几种蔬菜作物上的应用试验

Application of Phosphorus Gypsum on Some Vegetable Crops

盆栽和田间试验结果表明，在施ＮＰ肥基础上，配合每亩施用１００－２００ｋｇ磷石膏，有利于增加土壤有效钙、硫和磷等养分，改善了蔬菜作物对钙素等养分的吸收利用，明显促进了蔬菜作物的生长发育。ＮＰ肥＋磷石膏处理比单施ＮＰ肥处理产量显著提高。甘蓝增产１０．８％－１３．１％，番茄增产９．６％－１０．８％，芹菜增产９．２％－１０．４％，白菜增产９．８％。经方差分析达到１％和５％极显著和显著水平。施用磷石膏改善蔬菜产品品质，适量施磷石膏对土壤主要农化性状无不良影响。

The results of pot and field experiments showed that application of NP fertilizers with phosphorus gypsum (100￣200kg / mu)were favourable to increasing soil available calcium,sulphur phosphorus and other nutrients, improving the uptake or calcium by the crops and to promoting the growth. The yields or crops in the treatments with NP fertilizers and phosphorus gypsum were higher than those in single NP fertilizer treatment. The yields of cabbage, tomato, celery and Chinese cabbage increased by 10. 8% ￣ 13.1%, 9.6% ￣ 10.8%,9.2%￣10.4% and 9.8% respectively. The results of variance analysis indicated that the adding in yields reached 1% and 5% significance levels. Application of phosphorus gypsum could improve crop quality, and proper amount had no bad effect on major agrochemical characteristics of soil.