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甜菜纸简育苗施锌试验表明,于育苗土中施入锌肥,移栽前苗高随施锌量的增加而呈抛物线增加,以每册纸简土施2.5g锌者苗高最高,绿叶数也随施锌量的增加而增多,每册纸筒施40g锌者,叶干重和根干重分别比对照高54.5％和100.0％。7、8月份,各施锌处理的块根和叶丛生长均较旺盛,根叶比为1.1左右,而未施锌者为1.39。甜菜苗期植株叶绿素含量和过氧化氢酶活性均随施锌量增大而增加。所有施锌处理的产量均高于对照,块根产量比对照增加5％—28％,糖产量增加10.5％—32.3％。
Zinc fertilizers in simple seedlings of beet showed that the application of zinc fertilizer in nursery soil increased the parabolic height with the increase of zinc content before transplanting. The number also increased with the amount of Zn applied. Each batch of paper tube coated with 40g zinc had a leaf dry weight and root dry weight of 54.5% and 100.0% higher than the control respectively. In July and August, the growth of roots and leaves of various zinc treatments were more vigorous, the ratio of root to leaf was about 1.1, while that of those without zinc was 1.39. The chlorophyll content and catalase activity of beet seedlings increased with the increase of Zn application. The yield of all zinc treatments were higher than the control, tuber yield increased by 5% -28% compared with the control, sugar yield increased 10.5% -32.3%.