钙氮配施对湘苎三号纤维产量和品质的影响

Effect of Urea Combined with Ca(OH)_2 on Fiber Yield and Quality of Ramie Xiangzhu 3

以湘苎三号为材料，采用田间微区试验研究钙氮配施对苎麻纤维产量和品质的影响。结果表明施尿素150～450kg／hm^2时，同一供N水平下，苎麻纤维支数、单纤维断裂强力、含胶率和残胶率与施Ca量显著相关，纤维产量与施Ca量相关不显著；适量尿素和Ca（OH）2配施对苎麻纤维增产效果最显著。本试验条件下，适宜的钙氮配施方案为施尿素300kg、Ca（OH）2375kg／hm^2。合理的钙氮配施对指导苎麻钙氮肥施用，丰富苎麻营养理论，进一步提高苎麻纤维的品质具有十分重要的理论与实践意义。

A field experiment was carried out to study the effect the fiber yield and quality of ramie（Boehmeria nivea） variety Xiangzh of urea combined with Ca（OH）2 on u3. The results showed that, in the range of 150 - 450 kg/hm2 of urea application level, the fiber fineness, single fiber strength, pectin content and residual pectin rate had significant positive correlation with the increase of Ca （OH）2, and the fiber yield had no significant correlation with Ca（OH）2. The fiber yield increased most significantly with the suitable combination of urea and Ca （OH）2. The suitable combination was urea 300kg and Ca （OH）2 375kg/hm2. Reasonable use of urea combined with Ca（OH）2 could play a very important role in guiding fertilization and enriching the nutrition theory of ramie planting, as well as further improving the fiber quality of ramie.