都尔用于大豆田除草试验研究简报

Effect of Soil-applying N, NP and NPK Fertilizer on The Growth, Yield and Leaf Element Content of Blueberry

摘要:

本文阐述了都尔对大豆田禾本科杂草、阔叶杂草的防除效果，表明2250mL/hm²和3000mL/hm²两种剂量的都尔对禾本科杂草防除效果在98%以上，对苋菜、灰菜防效在47%以上，而对其它阔叶杂草则基本无防效。建议在禾本科杂草基数高的田块，使用3000mL/hm²的剂量；在禾本科杂草基数低的田块，使用2250mL/hm²的剂量；在以阔叶杂草为主的田块，应与氯嘧磺隆混用。

Abstract:

Six years old“Blomidon”lowbush blueberry cultured on dark brown forest soil was selected and N(NH₄NO₃), NP((NH₄)₂PO₄) and NPK compound fertilizer were applied in soil in twoyears.The result indicated that soil-applying N fertilizer increased the growth but decreased yield ofblueberry.Soil-applying NP and NPK compound fertilizer not only increased the growth but also increased the yield of blueberry. Leaf analysis showed that leaf N, K and Mn content were increased butleaf Ca and Mg content were decreased by all fertilizer treatment. Soil-applying N fertilizer decreasedleaf P but soil-applying NP and NPK fertilizer increased leaf P. According to the result, N fertilizer isnot benefit to blueberry culture, and NP and NPK fertilizer are benefit to blueberry culture. The suitableapplying amount of NP and NPK compound fertilizer is 500 to 1000 kg/hm².