摘要
以两种性质不同的水稻土为材料,研究水稻和小麦在不同锌用量环境中的生长情况,以及锌在土壤、植株中积累的状况。结果如下:(1)土壤有效锌随施锌量的增加而增加,增加的幅度因土壤类型而异,黑粘土有效锌积累率为35.4％,是黄砂土的4倍。(2)水稻能在所设计的锌用量范围内正常生长。小麦耐锌能力因土壤类型而有很大差异,_黄砂土上的小麦表现出较强的耐锌能力,黑粘土施锌量在20mg/kg土时,小麦出现受害现象。(3)糙米含锌量为17.8～33.15ppm,麦粒含锌量17.02～66.72ppm,黑粘土Zn_(20)和Zn_(40)处理的麦粒中锌已超过自然含量范围。
Investigation on rice and wheat growth with varied concentrations of Zn added and effect of Zn accumulation in soil and plant was carried out. The results are as follows:1. Available Zn content in soil increased with the increase of concetration of Zn added. Accumulation rate of available Zn in the Black Clay Soil was 4 times that of Yellow Sand Soil. 2.The rice grew fine on soil containing high Zn (40ppm). Wheat injury occurred when available zinc values of the Black Clay Soil is higher than 8.04ppm, while it did not on the Yellow Sand Soil. 3.Excess zinc may produce Mn deficiency of the wheat, because zinc toxicity symptoms is similar to Mn defleieney symptoms of the wheat and Mn valves of the wheat plant is lower.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1989年第3期57-61,共5页
Journal of Nanjing Agricultural University
基金
国家自然科学基金
关键词
黑粘土
黄砂土
锌
锰
毒性
水稻
小麦
the Black Clay Soil
the Yellow Sand Soil
Zinc
Manganese
Toxicity
Rice
Wheat
