Method for controlling plant height of malting barley by using ethephon
A technology of maize robustin and barley, which is applied in horticultural methods, botanical equipment and methods, applications, etc., can solve the problems that it is difficult to determine the quantity and concentration of chemical control agents, farmers rarely plant large areas, and plant heights, etc., to achieve Effects of overcoming phytotoxicity and inconvenient use, and improving lodging resistance
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Embodiment 1
[0010] In this embodiment, the method of spraying under low population conditions is taken as an example. On a farm in the coastal area of northern Jiangsu, the malting barley produced is a variety with a high plant height, such as Dan Er and Gang Pi No. 1. For fields with the number of spikes per mu less than 580,000, when the awning is 10%, every 667m 2 Use 60ml of corn tonic, mix with 25kg of water, and spray evenly. It can be seen from the following Tables 1 and 2 that too much or too little application amount is not conducive to plant height control or yield increase; the application time should not exceed 20% of the whole field at the latest, otherwise it will be green and late ripening. The large and small ears are obvious, which affects the yield and quality of malting wheat.
[0011] Table 1: Effects of different doses of maize extrinsin on malting barley plants (2007) Unit: cm
[0012]
[0013] Note: CK is the control treatment, that is, no maize extrinsic ho...
Embodiment 2
[0017] In this embodiment, the method of spraying under high population conditions is taken as an example. Still in a farm along the coast of northern Jiangsu, the malting barley produced is a variety with a high plant height, such as Dan Er and Gangpi No. 1. Fields with more than 580,000 ears per mu need to be sprayed with maize extrinsic twice to improve the effect of controlling plant height and increasing yield (see Table 3 and Table 4). The first time is to spray when falling 1 leaf, every 667m 2 Apply 60ml corn extrinsic, spray 25kg water evenly. The second spraying at Jianmang 10%, every 667m 2 Apply 60ml corn extrinsic, spray 25kg water evenly. When spraying, it should not exceed 20% of the awning at the latest, otherwise it will be too green and late ripening, and the size and size of the ears will be obvious when mature, which will affect the yield and quality of malting wheat.
[0018] Table 3: Effects of different times of use of maize extrinsic acid on plant t...
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