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1958年,我们设计了一种带有播种装置的蛇形耙。在采伐迹地和火烧迹地上,以及在疏林地林冠下,这种耙可以用来同时进行整地和播种松树、云杉。它的八小时生产率(包括补播和种子复土在内)为0.58公顷。该耙的通行能力良好,结构简单。播种装置的构造不复杂,并能保证每隔0.5米均匀播种25—30粒。焊接在耙板上的锯形耙齿与耙轴成一定的角度。它松土很好,因为锋利而加长的倾斜状开沟器能保证开出4——5厘米深的沟。我们设计的蛇形耙共有四节。从前面算起,在第三节耙上,有耙轴被固定在轴承上。在耙轴中间,有一条能容25——30粒松树或云杉种子的纵沟。在纵沟上面,有一个种子
In 1958 we designed a snake with a sowing device. The harrows can be used for simultaneous land preparation and sowing of pine and spruce logs on deforested and burned grounds and under canopy forests. Its eight-hour productivity (including sowing and seeding) is 0.58 hectares. The rake has good capacity and simple structure. Sowing device structure is not complicated, and can ensure that every 0.5 meters sown 25-30 tablets evenly. The saw-tooth rake welded to the rake plate is at an angle to the rake shaft. It is loosely ground because the sharp, lengthened, angled opener ensures a 4-5 cm deep groove. We design a total of four snake rakes. Starting from the front, in the third section of the rake, a rake shaft is fixed on the bearing. In the middle of the rake shaft, there is a longitudinal groove that holds 25 to 30 seeds of pine or spruce. Above the longitudinal groove, there is a seed