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半株距精量播种就是在行距不变的情况下,用准确株距的一半做播种株距,进行精量播种。出苗后按准确株距间苗,保持正常亩株数。如2.1尺大垄清种玉米,株距为8寸,播种时每4寸播1粒种子。间苗后仍为8寸株距。这种播种方法除改变播种株距外,还要改变播种量。玉米由过去每穴多粒,改为每穴播单粒;大豆由过去手摅条播、多粒穴播,改为单粒穴播。由过去人工播种改为用“702”播种机机械播种。此法适合玉米、大豆播种。
Precision sowing half of the plant is in line with the same row spacing of the situation, using the exact spacing of about half of planting sowing distance for precision sowing. According to the exact strain after emergence of seedlings, maintain the normal number of acres of plants. Such as 2.1-foot wide ridge clearing maize, spacing of 8 inches, sowing every 4-inch broadcast a seed. After the seedling is still 8-inch spacing. This sowing method in addition to change the sowing distance, but also change the sowing amount. Corn from the past more than the grain per hole, changed to per hole sowing grain; Soybean by the past sowing barley, multi-grain sowing, to a single sowing. Seeding by the past manual planting to “702” sowing machine mechanical sowing. This method is suitable for corn, soybean planting.