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问:苎麻怎样喷施赤霉素有什么作用?怎样喷施? 答:苎麻喷施赤霉素不但能促进纤维发育,增加纤维长度,提高纤维产量20—30%,还能提高肥料的利用率。苎麻喷施赤霉素(九二○)以头麻在快速生长期(中、后期),二、三麻在齐苗期、封行期最适宜。使用浓度30—40ppm,每亩用2.5—5克。于晴天下午或阴天喷施,喷湿上层叶片,一般喷两次,相距10—15天。喷施九二○应注意:纤维支数在1,800支以下的品种一般不宜施用,因为苎麻施后会降低纤维支数,支数
Q: ramie how to spray gibberellin what effect? How to spray? A: gibberellin sprayed ramie not only can promote fiber development, increase fiber length, increase fiber yield 20-30%, but also improve the utilization of fertilizer . Ramie gibberellic acid (920) to the first phase in the rapid growth of marijuana (middle and late), two, three Ma in Qi Miao period, the most appropriate sealing period. Use concentration of 30-40ppm, with 2.5-5 grams per mu. In the sunny afternoon or cloudy spray, spray the upper leaves, the general spray twice, 10-15 days apart. Spraying nine two ○ Attention should be paid: varieties with a fiber count below 1,800 are generally not suitable for application, because the ramie will reduce the fiber count, the number of counts