桐油包膜复合肥料的养分释放及其对黑麦草生长的影响

研究了4种供试桐油包膜复合肥料的基本特性,测定了其养分释放曲线.在不施基肥以及施以尿素、复合肥料和4种桐油包膜复合肥料基肥的情况下,用盆栽试验考察了施肥处理对黑麦草生长、形态指标和色泽的影响.结果表明,所有施肥处理均有助于黑麦草的出苗,在播种后的7周内,施以尿素、复合肥料或桐油包膜复合肥料处理的黑麦草植株高度和生物量均优于未施基肥的空白对照.施肥处理间黑麦草的植株高度差别不大,但第5周后,施以复合肥料的黑麦草生物量增加较快.桐油包膜复合肥料处理的黑麦草绿期优于复合肥料处理.

The nutrient release and effect on Lolium perenne growth of tungoil-coated compound fertilizer

The basic features of four tung oil-coated compound fertilizers (TCC) were studied, and nutrient release curves determined for them. Potted plants were used to study the influence of fertilizer treatment on the growth, morphological index, and color of Lolium perenne using base fertilizers including urea, compound fertilizer, and TCC. The results showed that all fertilizer treatments assisted in Lolium perenne seedling emergence, and within seven weeks from sowing, plant height and biomass was greater for the urea, compound fertilizer, and TCC treatments than for the no-fertilizer treatment. However, differences in plant height between fertilizer treatments were not great, but after the fifth week, the biomass increased relatively quickly for the compound fertilizer treatment. The green period was longer for the TCC treatments than the compound fertilizer treatment.