包膜控释复合肥对小白菜产量和品质的影响

利用大棚盆栽试验，就1次性基施自制的包膜控释复合肥对小白菜（Brassica chinensis Linn）两茬的产量及品质的影响进行了研究．结果表明，与100％非包膜控释复合肥处理相比较，施用100％包膜控释复合肥处理的在1、2茬平均单株鲜重分别增加了34．85％和39．40％（P〈0．05），主根长、维生素C和可溶性糖含量也都显著提高（P〈0．05），第2茬产量仅比第1茬产量降低约10％，表明足量的1次包膜控释复合肥基施可以满足小白菜两茬种植对养分的要求；随着包膜控释复合肥施用量的减少，小白菜的产量、主根长、维生素C及可溶性糖含量均降低；40％包膜控释复合肥处理的结果与100％非包膜控释复合肥的相当（P〉0．05），表明自制的包膜控释复合肥能显著提高小白菜的产量与品质．

Effects of coated controlled release compound fertilizer on yield and quality of Chinese cabbage

Pot experiments in plastic shield trellises were conducted to investigate the effects of different coated controlled release compound fertilizer(CCF) treatments on the yield and the quality of Chinese cabbage.The results showed that,compared with that of the 100% non-coated compound fertilizer treatment,the yield of Chinese cabbage with same amount of fertilizer treatment in the first and second planting increased 34.84% and 39.40%,respectively,and that main root length,contents of vitamin C and soluble sugar also significantly increased.They reduced while the amount of CCF applied decreased.The results of 40% coated fertilizer treatment were almost similar to those of the 100% non-coated compound fertilizer treatment.All the results shown that the use of CCF could notably increase the utilization efficiency of fertilizer applied,and improve the quality and the yield of Chinese cabbage.