玉米是贵州旱地粮食中的主要作物。在有些地、州、县(市)中它在粗食中占有较大比重。玉米是一个中耕作物,每年由于中耕除草花去的劳力和资金是很多的。如何节约这一部分投资,是国内外广泛注意的一个问题。近些年来,在国外不少国家,运用免耕和少耕种植的日益臻多。由于除草剂的发展、使用,更促进了免耕种植的发展。适用于玉米地的除草剂较多,某些除草剂施用于玉米地有其独特作用。 Corn is the main crop in Guizhou dry land food. In some places, state and county (city) it accounts for a large proportion of crude food. Corn is a cultivated crop, and the labor and capital spent on cultivation and weeding each year are substantial. How to save this part of the investment is a widespread concern at home and abroad. In recent years, in many foreign countries, the use of no-till and less-tilled planting has become more and more frequent. Due to the development and application of herbicides, the development of no-till cultivation has been promoted. More herbicides are applied to cornfields and some herbicides have a unique effect on cornfields.