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我县大豆都与玉米间作,因受玉米荫蔽,导致大豆茎细节长,叶薄秆软,甚至匍匐地面,花荚脱落率高,粒重低,影响产量。为此,我们试用新的植物生长调节剂多效唑来控制大豆株高,以增强抗倒能力。供试品种为八月白大豆,与玉米间作。玉米行距2.2米,行间套种3行。喷施多效唑浓度分25ppm、50ppm、100ppm、150ppm、200ppm、250ppm6个处理。喷量每亩50公斤。相当于每亩用1.25克、2.5克、5.0克、7.5克、10.0克、12.5克多效唑(指有效成
Soybean in our county is intercropped with corn. Because it is covered by corn, it leads to long stem length, thin leaf stalk, even creeping ground, high flower pod shedding rate and low kernel weight, which affects yield. To this end, we try a new plant growth regulator paclobutrazol to control soybean plant height, to enhance the anti-collapse ability. Test varieties for the August white soybean, intercropping with corn. Corn row spacing 2.2 meters intercropping intercropping 3 lines. Spray paclobutrazol concentration of 25ppm, 50ppm, 100ppm, 150ppm, 200ppm, 250ppm 6 treatment. Spray 50 kg per mu. Equivalent to 1.25 grams per mu, 2.5 grams, 5.0 grams, 7.5 grams, 10.0 grams, 12.5 grams paclobutrazol (effectively