Fertilizer-saving method for increasing yield of double-crop rice through returning lolium perenne and straws to fields

Abstract

The invention discloses a fertilizer-saving method for increasing yield of double-crop rice through returning lolium perenne and straws to fields and belongs to the technical field of fertilizer-saving and high-yield cultivation of agricultural production. The method comprises the following specific operating steps of subjecting fresh lolium perenne to turned-pressed field returning so as to replace part of nitrogen fertilizers during the growth of early rice, and returning straws of the early rice to the fields so as to replace part of the nitrogen fertilizers during the growth of late rice, thereby achieving the aims of soil fertility improving, nitrogen saving and high yield in a whole production cycle of the double-crop rice. According to the method, the problems of rice field cropping systems in the South of our country that the winter spare field area is enlarged, the rice field soil quality is lowered, the rice-production ecological cost is increased, the utilization rate of fertilizer is relatively low, and the like are solved, and the cultivation technique has the advantages that the yield of the double-crop rice is increased, the investment of chemical fertilizers is reduced, the utilization rate of fertilizer is increased, the soil tillage quality is improved, the yield is high, the nitrogen is saved, and the emission of N2O is reduced.

Description

technical field

[0001] The invention belongs to the technical field of fertilizer-saving and high-yield cultivation in agricultural production. In particular, it relates to a method for improving the yield of double-cropping rice by returning ryegrass and straw to the field to save fertilizer. The specific performance is that during the growth period of early rice, fresh ryegrass is used to replace part of the nitrogen fertilizer, and during the growth of late rice, the straw of early rice is used. Part of the nitrogen fertilizer can be replaced in the field to achieve soil fertilization, nitrogen saving, and N reduction in the entire production cycle of double-cropping rice. 2 O emissions, high yield goals. Background technique

[0002] Crop rotation refers to the method of planting different crops or multiple crop combinations sequentially between seasons and years on the same field, also known as multiple crop rotation. Reasonable crop rotation can eliminate or reduce t...

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