摘要
通过大田试验,研究了叶面喷施锌以及锌与钾、镁、铁、锰、铜、钴、钼、硼等营养元素配施对香米中营养元素含量和香稻产量的影响,同时从光合及碳水化合物积累的角度对产量变化的机理进行了分析。结果表明:抽穗期以及抽穗后7 d和14 d分3次叶面喷施锌、锌与镁、锌与镁和钾以及锌与镁、钾、铁、锰、铜、钴、钼、硼等营养元素均能显著提高香米中所施用营养元素的含量,其中锌与镁钾铁锰铜钴钼硼等多种营养元素的配施,显著提高了灌浆中后期剑叶叶绿素含量和净光合速率,籽粒中可溶性糖含量和淀粉积累量也明显较高,最终表现为产量显著提高。
Based on field experiment,the changes of the nutrient elements accumulation in milled grain and the yield of aromatic rice were studied by spraying zinc and other multiple nutrient elements and at the same time,the mechanism underlying the changes of grain yield was analyzed from the aspects of photosynthesis and carbohydrate accumulation.The results showed that the grain yield and the content of zinc and other nutrient elements in milled rice were significant improved by spraying zinc and other related nutrient elements on heading stage and followed on the 7th and 14th day after the heading stage.By spraying zinc and other multiple nutrient elements such as magnesium,kalium,iron,manganin,copper,cobalt,molybdenum and boron,the photosynthesis rate and chlorophyll content of flag leaf and the content of soluble sugar and starch in developing grain were obviously improved during the middle and late grain filling stage,which led to the improved filled grain percent,filled grains per panicle and 1000-grain weight and as a result the aromatic rice grain yield was significantly improved.
出处
《广东农业科学》
CAS
CSCD
北大核心
2012年第1期21-24,共4页
Guangdong Agricultural Sciences
关键词
香稻
锌肥
营养元素
产量
aromatic rice
zinc
nutrient elements
yield
