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The application of Chlormequat chloride in controlling growth and shrinkage of wheat and  resistant to lodging

Since the 1960s, China has also applied Chlormequat chloride on high-yield wheat cultivation to prevent lodging and increase yield. Several domestic scientific research and teaching units have extensively conducted researches on the application methods, usage periods, dosage, and variety sensitivity of Chlormequat chloride, effectively promoting the work of preventing high -yield wheat lodging with Chlormequat chloride. 

1,The effect of using Chlormequat chloride in wheat fields
The application of Chlormequat chloride reducing plant height of high-yield wheat cultivation at any stage is effective, but the part that inhibiting internode elongation are different. Among them, the early treatment of diversity without elongation can effectively inhibit the elongation of 1-3 internodes at the base, which is good for preventing lodging. The wheat treated at the same time has short internodes, thick stems, deep leaf color, thick and wide leaves, which is short and strong, but do not affect the normal growth of wheat ears, and can increase yield by 17%.
What need to be noticed is the treatment should generally not be done after the jointing stage. Although it can inhibit internode elongation, it can affect the development of panicles and easily lead to the yield reduction. 

2,Technical points for using Chlormequat chloride in wheat fields.
The most suitable period for spraying Chlormequat chloride is from the end of titillating to the early stage of jointing, The length of the first internode was about 0.1cm.
For two times-spray, it is best to add one more spray again at 0.1cm, with a time interval of about 10 days between the two times. The appropriate concentration for application should be 1250-2500mg/L of active ingredients. When the plant is overgrown, the upper limit should be taken, and when it is overgrown, the lower limit should be taken. 0.5kg of 50% Chlormequat chloride aqueous solution is used per mu each time, it is required that the spray is uniform, otherwise, the height of the plant will be uneven, and the ripening time will be inconsistent, and spraying at the noon in the scorching Sun should be avoided to prevent leaf burning. For wheat fields with insufficient total stem count and weak seeding conditions, it is not advisable to spray alcohol chlormequat, but for those with vigorous seedings, local spraying can be used. 
The application technology is for reference only.
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