Water-saving irrigation method in rice planting process

Abstract

The invention relates to a water-saving irrigation method in a rice planting process. The method comprises the following steps: step 1, before transplanting rice in a seedling stage, observing the water level depth in a field; step 2, from the seedling transplanting stage to a turning green stage, enabling the water layer depth in the field to be 20-30mm; step 3, after a tillering stage, observingthe water layer depth, in a monitoring device every day, in the field in a shallow water layer drying stage, and recording the water layer depth; and step 4, according to the recorded data, determining irrigation requirements according to the water layer depth conditions of the rice in each stage. According to the rice water-saving irrigation technology, a shallow humidity regulation and controlirrigation technology is carried out according to the physiological water requirement stage of the rice, three irrigation methods of shallow water irrigation, wetting irrigation and intermittent irrigation are scientifically combined together, and according to the water requirement characteristics and growth rules of the rice, the principles of seedling transplanting with thin water, water storageand living, tillering promotion with shallow water, field drying under conditions of sufficient seedlings, spike growing with shallow wetness, wetting type grouting, and yellow ripeness and drying are provided, and the upper limit of the water layer of the rice field and the lower limit of the soil water content of the rice root system are controlled, so that the water-saving irrigation technology for the rice can save water by 25%-40%.

Description

technical field [0001] The invention relates to the technical field of plastic processing, in particular to a water-saving irrigation method during rice planting. Background technique [0002] Global agriculture in the 21st century faces two major challenges: one is the need to increase food production to meet population growth, and the other is the need to deal with the dwindling water resources while increasing food production. Rice is one of the most important food crops in the world, providing 35% to 60% of dietary calories for about 3 billion people. Rice is also the most water-intensive crop, accounting for about 80% of agricultural water use in Asia. [0003] As the water resources for crop irrigation become more and more scarce, this seriously threatens the production of crops, especially rice. We adapt measures to local conditions, summarize and accumulate valuable experience in rice water-saving irrigation, alleviate water resources and save rice production costs....

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Problems solved by technology

[0004] The purpose of the present invention is to provide a water-saving irrigation method in the process of planting rice to solve the problem that in the prior art, the water-saving irrigation technology for rice cannot be efficiently used to optimize the physiological water demand of rice and minimize the evaporation and leakage between trees.

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