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为解决吉林省湿润冷凉区玉米倒伏造成减产的问题,试验了不同时期及不同时期组合喷施玉黄金的效果,结果表明:苗期+拔节期+喇叭口期喷施,拔节期+喇叭口期喷施和喇叭口期喷施处理均能不同程度的降低株高和穗位高,并且增加支持根数。各处理均增加玉米产量,其中苗期+拔节期和苗期+拔节期+喇叭口期喷施玉黄金增加产量显著,达到6.95%~6.98%。建议生产上在苗期和拔节期喷施两次玉黄金,浓度为300 mg/hm2。
In order to solve the problem of yield reduction caused by lodging of maize in humid and cool area of Jilin Province, the effect of spraying jade gold on different periods and different periods was tested. The results showed that: spraying at seedling stage + jointing stage + Spraying and trumpet spray treatment could reduce plant height and ear height to some extent, and increase the number of supportive roots. All treatments increased the yield of maize, of which the spraying of jade gold at seedling stage + jointing stage and seedling stage + jointing stage + trumpet stage increased yield significantly, reaching 6.95% ~ 6.98%. It is recommended that jade gold be sprayed twice at seedling stage and jointing stage at a concentration of 300 mg / hm2.