摘要：
The invention discloses a rice three-free cultivation method for the paddy field. The rice three-free cultivation method comprises the following steps of treating straws of previous harvested crop, performing ridging, transplanting rice, adding earthworms, performing field management, and after rice is harvested, performing three-free circular planting. Ridging is performed in the paddy field, water is stored in furrows, and the rice is planted on ridges, so that the roofs of the ridges are maintained to be moist and free from water; through shielding of the rice, before ridging, an organic fertilizer is basally applied, full dose of the straws are returned to the field, and the roofs of the ridges are covered with the straw, so that favorable places and rich baits are provided for growthand propagation of the earthworms, and self-reproduction of the earthworms in the paddy field is realized. The earthworms are bred in the paddy field, so that the content of nitrogen, phosphorus, potassium and the like in the soil are increased, and the problems of sealing of soil, secondary gleyization and the like can be solved; through the furrows, the water storing and draining capacity of thepaddy field can be improved, the utilization efficiency of natural rainfall can be improved, and three-free operations namely free from tillage, free from straw burning and free from irrigation of the field, in the production course of the rice, are realized, so that the energy consumption during operation is reduced, the irrigation water is reduced, and haze is reduced.
摘要：
The invention discloses a threshing method of a threshing device in a grain combine harvester. The threshing method comprises the steps that feeding amount information, crop moisture content information and cleaned grain breakage rate information in the threshing process of the threshing device are collected in real time; according to the collected information, the optimal rotating speed of a threshing roller in the threshing device and the optimal threshing gap of the threshing device are calculated through a fuzzy judgment algorithm; and the rotating speed of the threshing cylinder is adjusted to the optimal rotating speed, and the threshing gap of the threshing device is adjusted to the optimal threshing gap. The threshing method can adapt to the objective conditions of the current feeding amount and the crop moisture content, and the loss rate and the breakage rate index of grain harvesting are optimal.
