摘要
许多土壤中B、Zn由于含量或有效性低而供给不足,成为作物营养平衡与大面积产量提高的重要限制因素。采取各种方法直接施用B、Zn,或者配制在尿素中施用,可以调节作物营养平衡,改善作物-环境生态关系,提高产量和品质。在水稻旱育苗地区还可把Zn配在育苗土壤调制剂中施用。在缺Zn褐土上,施入的Zn迅速转化为各种形态,其中碳酸盐结合态是有效Zn的主要仓库。配合施用P肥对Zn的有效性无不良影响,Zn与N、P配合施用有益于作物营养平衡。
Based on soil tests and field experiments, it is expounded that the supply of B and Zn is insufficient in many soils of Liaoning province, being a major factor limiting crop nutrient balance and yield increase in large areas. Applying B or/and Zn directly or compounding them with urea beforehand may improve the nutritional and growing status of crops and increase their yield and quality. For upland rice nursery, Zn may be applied with compounding of soil regulator which contains sulphurie acid and other nutrients. In drab soil deficient in Zn, the applied Zn transforms rapidly into its various forms, among which, the carbonate-bound one is the major storage of available Zn. Applying P fertilizer simultaneously doesn't decrease the availability of Zn. Therefore, the application of Zn in combination with N and P will advantage crop nutrient balance and yield increase.
出处
《应用生态学报》
CAS
CSCD
1992年第3期280-285,共6页
Chinese Journal of Applied Ecology
关键词
作物
营养平衡
微量元素
硼
锌
Soil B and Zn deficiency, Crop nutrient balance, Micronutrient, Zn transformation.
