“Double carbon” has become the key task of Chinas agricultural green development. It is urgent to reduce agricultural greenhouse gas emissions in order to achieve the carbon neutral goal of 2060. This paper reviews the research progress and development trend of agricultural carbon emission in China in recent years, summarizes the research on the six major emission sources of agricultural materials, rice planting, carbon fixation of cultivated land, straw burning, livestock and poultry breeding and agricultural machinery, and publishes the suggestions and prospects for carbon emission reduction of the six major agricultural emission sources. The research shows that there are many empirical analysis on the agricultural carbon emission intensity of the five major agricultural emission sources of agricultural materials, rice planting, straw burning, livestock and poultry breeding and agricultural machinery, and the carbon emission reduction effect is significant, because of the effective regulation of its carbon emissions and the impact of strengthening the purchase subsidy policy. However, there is less empirical analysis on the carbon sequestration of arable land, and the process of carbon emission reduction is slow, mainly due to the greater impact of the subjective factors of farmers, so we should strengthen the publicity and learning of farmers. Although Chinas total agricultural carbon emissions fluctuate up and down, they tend to decline as a whole. In order to achieve green and sustainable development, the government and the whole people need to work together. The implementation of lowcarbon agriculture is conducive to achieving the 2060 carbon neutral goal.

Aiming at the problems of poor sowing quality, poor stability of sowing depth, and low degree of compound operation of wheat sowing machine, a double axis rotary tillage and pressing groove sowing, ditching, and even covering soil machine was designed. This paper analyzed the working principle of the machine and, according to the actual operation needs, designed a transmission system and calculated the transmission efficiency of the whole machine, which was 0.716. In order to open 5 cm wide and 1-3 cm deep wheat seed trough stably, a special slotted wheel was designed to ensure the sowing depth and improve the stability of sowing depth and width. According to the working width of 3 500 mm and the sowing depth of 1-3 cm, the parameters of the length and diameter of the auger were determined, and a ditching and even covering soil device was designed. The left and right two-stage auger mechanism was used to improve the soil flatness within the range of tillage. A soil cleaning device was also designed with left and right two-stage auger mechanisms. The results showed that the accuracy of the prototype was 88.67%, the dispersion was 45.45%, the uniformity was 73.74%, the accuracy of the ordinary seeder was 78.72%, the dispersion was 39.38%, and the uniformity was 44.83%.