Fertilization method for rice dry nursery

Abstract

The invention discloses a fertilization method for rice dry nursery. The fertilization method comprises the following steps of chopping straw and returning to field in late autumn after rice is harvested, then, seeding vegetables with a growth cycle or applying green manure, and performing multiple turnover and fertilization at the right time so as to increase organic matter and various nutrients of soil of the dry nursery. The operation method is simple and feasible. The organic matter content of the soil of the dry nursery fertilized by using the fertilization method disclosed by the invention can be increased by 0.2-0.3 percent point; the hardening phenomenon cannot occur in the dry nursery when rice seedlings are raised; the nutrients are complete, and are evenly distributed, so that the needs of the rice seedlings are ensured. The single plant tiller ratio of the raised rice seedlings reaches as high as 10-15 percent points; the transplant injury is slight after the rice seedlings are transplanted to the field; sprouting is early; low position tillers are numerous; the high-yield cultivation requirements are met. The fertilization method for the rice dry nursery is easy to popularize and apply in vast rural areas.

Description

technical field [0001] The invention relates to a cultivation technology of grain crops, in particular to a method for fertilizing paddy seedling fields. Background technique [0002] At present, in the process of rice cultivation, dry-raised seedlings have strong stress resistance, light plant damage after transplanting, less tiller vacancy, strong tillering ability, and early emergence. It is a good seedling raising method. However, in large-scale rice production, due to the cumbersome and inconvenient operation of the standardized dry seedling field, it is difficult for farmers to do it. Many farmers use ordinary vegetable fields and winter slack fields to make temporary crops 3-5 days before sowing. In dry seedling fields, the soil organic matter, humus and other nutrients are low. Increased fertilizer application results in burnt seedlings, severe hardening during seedling cultivation, poor quality of rice seedlings cultivated, and no obvious advantage of early developm...