摘要: |
在小麦拔节期喷施壮丰安和抽穗期喷施增粒增重剂的初步研究表明:壮丰安具有缩短基部伸长节间、调节植株形态和促进幼穗生长的作用,但不影响幼穗的发育进程;壮丰实对籽粒发育的影响为灌浆初期速度较慢,中期以后速度较快;增粒增重剂除能增加单德结实粒数外,更能提高籽粒灌浆初期的灌浆速度,从而明显提高位重。壮丰安和增粒增重剂表现出一定的配合效应。因此,根据作物生长发育的特点和拟解决的问题,研究不同植物生长调节剂的相互作用和配合方式,具有一定的理论意义和应用价值。 |
关键词: 小麦,节间,叶,籽粒,生长调节剂 |
DOI: |
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基金项目:国家科委重点攻关项目 |
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On the System of Chemical Control Techniques of Wheat Growth |
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Abstract: |
In order to reduce the loss from wheat lodging and the grain weight unstability,which were main problems of high-yielding wheat production in Northern China, two mixedgrowth-regulating substances (Zhuang Feng An, ZFA as a growth retardant and Zeng LiZeng Zhong Ji, ZLZ as a growth enhancer) were used in this study. ZFA was applicd as fo-liar spray at. beginning of stem elongation stage, and the effect was found of decreasing thelengths of lower internodes and urper 3 leave blades, raising ear growth rate, and decreasingthe grain filling rate at earlier stage but, increasing the rate at later stage of grain filling pe-riod- ZLZ was sprayed at booting stage, and was found to increase the uppermost two in-ternode lengths, and to raise grain filling rate and 1000-grain weight. Because some coopra-tive effects between the two growth regulators were found in this study, further study theinteractions and cooprations between different growth regulators were of certain significantto theory and application. |
Key words: wheat,internode,leaf,grain,growth regulator |