小麦化学控制技术体系的初步研究

On the System of Chemical Control Techniques of Wheat Growth

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。

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.