飞机大面积喷施硫酸锌增产效果的初步研究

INITAL STUDIES OF INCREASING OUTPUT FROM SPRAYING ZINC SULFAT FOR A LARGE AREA BY AIRPLANE

摘要:

在大面积缺锌的地带性土壤上,作物生育初期发现缺锌或潜在缺锌症状时,采用飞机作业喷施锌肥,则能做到及时防治,成本低,增产明显。
用3%的硫酸锌溶液,每架次载肥液1吨,喷300亩,作物缺锌症状十天后恢复正常。玉米增产12.6—20%,亩增玉米48.5公斤以上,高粱增产7.3%,亩增粮15.5斤。地势低洼,pH高,缺锌严重的盐碱土、盐化草甸黑钙土增产效果比岗地黑土明显。分析植株,土壤锌的浓度,对作物,人畜健康没有危害。每亩纯收益可达6元多。

Abstract:

Sprayed Zn—fertilizer by airplane for a large area with lack of Zinc symptom of lack of Zinc for seedlings would be prevented cheaply.Sprayed solution of ZnSO₄ 30%, 300 mu per ton by a airplane, the symptom would be disappeared after 10 days.Output of Corn, Sorghun increased by 12.6—20% (48.5 kg) and 7.3% (15.5 kg) per mu respectively.
The output increases in saline-alkali soil with lower landpotential, higher pH, lack of Zinc seriouly and in salinized meadow chernozem were more obvious than those of mount black soil.Zinc content in the soil and the plants didn’t show any harmful effect to animals and plants.Net income increased by much more than six yuan per mu.