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二甲四氯是一种高效低毒,激素型,具有高度选择性的化学除草剂。据报导,二晚秧苗在拔秧前适期适量施用二甲四氯,不仅可以防除杂草,而且可使秧苗老根霉烂,新根进发,达到拔秧易、花工少、劳动强度减轻的目的,有利加快二晚插栽进度、争季节,夺丰产。我场多年来对于生育期长、播种早、秧龄长的品种的育秧存在一些问题不能解决。如采用水播水育常易引起秧苗徒长,造成移栽时拔秧困难,花工费时;如采用旱育水拔,虽然控制
MCPT is a highly effective, low toxicity, hormonal, highly selective chemical herbicide. It is reported that two nights before the appropriate seedlings in the evening before seedling application of MCPA, not only can weed control, but also make young root rot rot seedlings, new roots into the hair, to pull the seedling easy, less labor, labor-intensive The purpose is to speed up planting schedule two nights, fight the season, seize the high yield. My field over the years for the growth period, sowing early seedling seedling varieties of seedling there are some problems can not be solved. Such as the use of water sowing and fertilizing often lead to leggy growth of seedlings, resulting in transplanting seedling difficulties, spend time; such as the use of dry water, although the control