Seedling-transplanting under-mulch drip irrigation cultivation method for paddy rice

Abstract

The invention belongs to the technical field of paddy rice cultivation methods and particularly relates to a seedling-transplanting under-mulch drip irrigation cultivation method for paddy rice. The method includes: preparing seeds; sowing; performing seedbed management; transplanting; performing field management; harvesting. The method has the advantages that the advantages of a traditional seedling-transplanting cultivation method and the advantages of a novel under-mulch drip irrigation cultivation method are integrated sufficiently, the defects of the two methods are overcome, and the method is an innovative paddy rice cultivation method; the method can prolong the growth period of the paddy rice, increase effective accumulative temperature, promote the safe ripening of the paddy rice, increase yield and paddy rice quality and guarantee stable yield.

Description

technical field [0001] The invention belongs to the technical field of rice cultivation methods, and relates to a drip irrigation cultivation method for growing seedlings and transplanting rice under film. Background technique [0002] Rice accounts for more than half of my country's total grain output, and ensuring rice production is of great strategic significance to ensure my country's food security and sustainable agricultural development. Traditional rice cultivation adopts the submerged irrigation method, and there is a water layer (3-10cm) in the field throughout the growth period, and the water demand is large. As we all know, my country is a typical water-deficient country. 80% of water consumption is agricultural water, 70% of which is used for rice planting, and an average of 2 tons of water is needed to produce 1kg of rice. Not only the water consumption is amazing, but also the waste of water resources is serious; A large amount of greenhouse gases CH4 and N2O a...

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Problems solved by technology

[0003] Compared with the traditional rice flood irrigation treatment, the drip irrigation rice cultivation method under the plastic film can save more than 60% of water, but in the actual production application, it is still difficult to establish a high yield and difficult to stabilize the problem (He et al., Rice performance and water use efficiency under plastic mulching with drip irrigation.PLoS ONE,2013,8:1-15.)

The main reason is, first of all, when the method of drip irrigation under mulch is used, the iron-deficiency yellow flower phenomenon often occurs in the rice seedling stage after sowing due to the low air temperature (soil temperature), and some serious fields even have the yellow flower dead seedling phenomenon, which in turn affects the quality of rice seeds. Germination, seedling growth and final yield formation; secondly, in arid and semi-arid rice production areas such as Xinjiang, compared with other rice areas, rice growth has its own particularity, such as the time suitable for rice growth and development is short, the active accumulated temperature is limited, and the early temperature rise The characteristics of slow cooling and rapid cooling in the later period lead to poor grain filling, low seed setting rate, and small grain weight of drip irrigation rice under mulch, which affects the final yield and rice quality (He Haibing, 2014); , often choose rice varieties with a relatively short growth period, and previous studies have shown that crop yield and growth period are positively correlated (Wang Benfu, 2006), so the increase in rice yield is limited to a certain extent

For the rice seedling transplanting cultivation method, the cultivation management method of flooding after transplanting is mostly used in Xinjiang, which consumes a lot of water. Due to the limitation of natural resources in Xinjiang, it is difficult to popularize and apply

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