Machine transplanted seedling missing identification and gap-filling method

Abstract

The invention provides a machine transplanted seedling missing identification and gap-filling method, and belongs to the technical field of agricultural production. The machine transplanted seedling missing identification and gap-filling method includes the following steps: performing shallow water irrigation on field seedlings after machine transplanting; draining water in a field after the seedlings are alive; remotely controlling an unmanned aerial vehicle to perform aerial photography on the field to obtain a seedling image; and dividing the seedling image into multiple sub-regions, identifying numbers of the seedlings in the sub-regions, generating seedling missing rate data, and performing precise seedling throwing gap-filling operation in the corresponding sub-regions if the seedling missing rate data is greater than a seedling missing threshold. The machine transplanted seedling missing identification and gap-filling method overcomes the problems that conventional manual seedling transplanting gap-filling is labor-consuming, time-consuming, high in seedling gap-filling cost, not ideal in seedling gap-filling effect and the like, and is beneficial to population optimizationand fertilization balance to realize balanced and high yield of hybrid rice in different areas.

Description

technical field [0001] The invention relates to the technical field of agricultural production, in particular to a method for identifying missing and filling machine-transplanted seedlings. Background technique [0002] Mechanization of rice is the development direction of rice farming technology in my country. Mechanization of rice farming and harvesting is basically realized in my country, but the level of planting mechanization is low, accounting for only about 40%, and the development is unbalanced between regions and varieties. Among them, hybrid rice machine-transplanted The proportion is only about 10%, and its mechanized planting has become a bottleneck restricting the whole mechanization of rice production, and it also limits the development of scale, specialization, commercialization and modernization of rice production in my country. The planting area of ​​hybrid rice accounts for more than 50% of the total area of ​​rice in my country. Due to the low yield of hybr...

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Problems solved by technology

Relevant studies have shown that the rice seedling loss rate is less than 5%, and due to the group adjustment effect such as rice tiller compensation, it has little impact on yield. When the rice machine transplanting leakage rate is higher than 10%, it can cause 4-10% loss of rice yield

In order to solve the problem of hybrid rice machine-transplanted missing seedlings, the usual practice in production is to observe and judge the number of missing seedlings with the naked eye. Fields with a low rate of missing seedlings usually do not replenish seedlings, and fields with high missing seedlings often use manual transplanting to replenish seedlings. The seedlings used are generally machine-transplanted remaining blanket-shaped seedlings. With the transfer of rural labor force and the increase in labor costs in recent years, it takes a lot of work and time to replenish the seedlings, and it is often impossible to find suitable labor, which affects the stability of rice production.

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