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一问:为什么果园要在雨季来临之前或刚刚进入雨季进行化学除草? 答:这是由雨季果园杂草的发生情况和化学除草的特点两方面决定的。我国北方地区雨季集中,很多杂草在雨季猛发快长,这时果树对水肥的需求也达到了高峰。所以,杂草与果树争水肥的矛盾激烈,如遇阴雨连绵天气极易造成草荒。而人工锄草由于费时费工,效果不好;化学除草以其杀草迅速,除治彻底、投资少、效益高、增加产量、提高品质等特点,成为雨季果园除草的最佳措施。二问:果园杂草种类多、为害时间长、选择哪种除草剂效果最好?
Q: Why orchards should be before the onset of the rainy season or just into the rainy season for chemical weeding? A: This is from the rainy season orchard weed and chemical weed control characteristics of two decisions. In the northern part of China, the rainy season is concentrated. Many weeds grow fast in the rainy season. At this time, the demand for water and fertilizer from fruit trees has also reached a peak. Therefore, weeds and fruit trees fierce competition for water, in case of rainy weather can easily lead to grassland shortage. The artificial weeding due to time-consuming work, the effect is not good; chemical weeding with its rapid grass-killing, in addition to governance and thorough, less investment, high efficiency, increase production, improve quality characteristics, become the orchard rainy season weeding the best measures. Second question: Orchard weed species, damage for a long time, which herbicide to choose the best?