Three-source, three-reservoir and three-flow super-high-yield regulation and control method for rice

Abstract

The invention discloses a three-source, three-reservoir and three-flow super-high-yield regulation and control method for rice. The method comprises the following steps: designing a total fertilization amount and a scheme according to a yield target and variety characteristics of a high-yield rice variety: firstly, determining the fertilization amount, and secondly, determining a fertilization period; establishing a strong source group: firstly, carrying out field transplantation, then precisely applying earing fertilizer in a second stage of young ears and young ear differentiation, and precisely applying the earing fertilizer in a fourth stage of young ears and young ear differentiation; expanding the storage capacity of the group: firstly, differentiating glumous flowers to increase the number of grains, secondly, forming ears by weak tillers to increase the number of ears, and then adjusting the fertilizer according to the temperature to increase the weight of grains; promoting the substances to be transferred from sources to reservoirs: firstly, preferentially transferring weak ears, secondly, adopting high root pressure for promoting grouting, and then adopting high transpiration for promoting transportation. According to the three-source, three-reservoir and three-flow super-high-yield regulation and control method for rice, the number of ears of stem tillers of the group is increased through double-parent transplanting, a large reservoir group with a sufficient number of effective ears and glumous flowers in the full heading period is established, the grain fullness and the harvest index are improved, and therefore the higher yield is obtained.

Description

technical field [0001] The invention relates to the technical field of rice cultivation, in particular to a method for super-high-yield regulation of rice with "three sources, three reservoirs and three streams". Background technique [0002] The yield potential of high-yielding rice varieties is huge, but in large-scale production and planting, it is difficult to coordinate the "source" and "sink" of ultra-high-yielding rice populations under extensive cultivation techniques based on experience, resulting in the high-yield potential of varieties not being fully realized. There are a series of problems such as large yield difference between plants and low fertilizer and water use efficiency. With the unremitting efforts of rice breeders in my country, high-yield rice varieties with multiple grains, large spikes, long growth period and yield potential exceeding 1000kg / mu have been bred. However, during the large-scale promotion and planting of these high-yielding rice variet...

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Problems solved by technology

At present, the traditional method has the following problems: (1) The cultivation method of rice varieties with medium and high yields in a large area, regardless of the yield potential and growth characteristics of the varieties, extensive management and fertilization based on experience, resulting in low yield and low fertilizer use efficiency (2) High-yield rice varieties have the characteristics of long growth period, large panicle and many grains. Extensive management and fertilization mode based on experience often lead to small total flowering (pool) at the full heading stage, and premature senescence of functional leaves in the late stage of filling and fruiting. Insufficient photosynthetic substances (sources) make it difficult to coordinate between sources and sinks, which limits the improvement of rice yield

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