黄腐酸抗旱营养剂对小麦和玉米生长的影响

研究了黄腐酸旱地龙拌种、浇灌以及喷施对小麦和玉米生长的影响。结果表明:拌种时间为30 min时可提高小麦的发芽率和促进小麦苗期生长;浇灌试验中,正常供水条件下,浓度为600倍的稀释溶液相比对照可显著降低叶绿素a和类胡萝卜素含量,分别降低17.7%和15.6%;而干旱胁迫下,稀释480倍处理相比对照显著提高叶绿素a含量达24%;浇灌FA可显著提高田间玉米花粒期株高和Chla+b,分别提高7%和17%,喷施处理提高叶片净光合速率和水分利用效率,分别为25%和28%,而浇灌处理提高了62%和45%;浇灌FA显著提高田间小麦苗期和返青期叶绿素含量。

Effects of drought-resistant fulvic acid liquid fertilizer on wheat and maize growth

Effects of fulvic acid on wheat and maize growth were studied through seed mixing,water culture and spray.The result showed that the best seed mixing time was 30 min which can increase wheat germination rate and improve wheat growth.In water culture trial,chlorophyll and carotenoid contents can be decreased by 17.7% and 15.6% respectively with dilution solution at 600 times under water applied while it can be increased by 24% with 480 times dilution solution compared with control under drought stress.The plant height and Chla+b of maize leave in field trial at flower stage can be increased by 7% and 17% respectively,spray with FA can increase photosynthesis rate and water use efficiency in maize leaf by 25% and 28% while irrigation with FA treatment increased by 62% and 45%,respectively.The pigment content of wheat leaf in field at seedling stage and stage of seedling establishment can be increased significantly with FA irrigation.