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我省园林及其苗圃(包括茶、桑、柑、橙、蕉、木瓜、果园以及绿化、美化所用的苗圃)约有50多万亩,严重存在着草害耗费劳力的问题.此外,长期采用人工铲草,还会造成水土流失,降低土壤肥力,损伤苗木根系,直接影响苗木的生长发育,降低质量.为了避免上述弊端,寻求省工、省时、经济而有效的措施,我们于1973-1980年进行试验,从28种除草剂中筛选出适于园林苗圃灭除成株大草的达拉朋、百草枯、草甘膦和二甲四氯等4种除草剂(表1).这4种除草剂能够有效地杀伤杂草的地上部分和灭除其地下部分.它们的除草效果分别为:达拉朋对1年生禾本科杂草为90%,对多年生禾本科杂草效果80-90%;草甘膦对1年生和多年生单、
About 50 million mu of gardens and their nurseries (including tea, mulberry, orange, orange, banana, papaya, orchards, landscaping and beautification nurseries) in our province are seriously experiencing the problem of labor and labor. In addition, Artificial shoveling, but also cause soil erosion, reduce soil fertility, damage seedling roots, directly affect the growth and development of seedlings, reduce quality.In order to avoid the above drawbacks, looking for labor-saving, time-saving and cost-effective measures, In 1980, we carried out experiments to screen out the 28 herbicides for four herbicides (Table 1), which are suitable for killing adult plants in garden nurseries, such as dalapene, paraquat, glyphosate and MCPA (Table 1). Herbicides can effectively kill the aerial parts of weeds and eliminate their underground parts.Their herbicidal effects are as follows: darapurine is 90% for annual grass weeds and 80-90 years for perennial grass weeds %; Glyphosate for 1 year and perennial single,