Method for testing responses of different kinds of paddy rice on slow-release urea

Abstract

The invention provides a method for testing responses of different kinds of paddy rice on slow-release urea in the technical field of agricultural tests. The method includes the following steps: (1) taking three kinds of paddy rice which are yangdao 6, yangliangyou 6 and yangjing 4038 as a split plot, planting density being 13.3 * 25.0 cm; taking fertilizer treatment as a main area, which respectively is S-type release curve slow-release nitrogen fertilizer (pure N30 g.m<-2>), linear release curve slow-release nitrogen fertilizer (pure N30 g. m <-2>), conventional urea fertilizer and no nitrogen fertilizer; applying the slow-release fertilizer at one time before transplanting, and applying the conventional urea for four times according to base fertilizer, tillering stage, flower promotingfertilizer and spikelet-developing fertilizer; (2) measuring the stem and tiller dynamic state of a growth stage and the production and distribution of substances; (3) measuring the content of chlorophyll; (4) measuring yield and yield components; (5) measuring nitrogen absorbing amount, the utilization efficiency of nitrogen elements and the quality of paddy rice; and (6) performing data analysisaccording to the above measured data. The method is simple in test and easy to operate.

Description

technical field [0001] The invention relates to the technical field of agricultural testing, in particular to a testing method for the response of different rice varieties to slow-release urea. Background technique [0002] The application of nitrogen fertilizer is the basic measure to maintain the top soil fertilizer, and it is also the main guarantee of the mineral nutrition required for plant growth. According to statistics, in 1980, the amount of nitrogen fertilizer used in our planting industry was 9.342 million tons. With the development of modern planting industry, the amount of nitrogen fertilizer application increased rapidly. In 2013, the amount of nitrogen fertilizer used in our planting industry increased to 34.942 million tons. t (National Bureau of Statistics of the People's Republic of China, 2014), 3.74 times that of 1980. There are many kinds of vegetables planted in my country, mainly including leafy vegetables, rhizomes, melons and fruits, beans, etc. The...

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Problems solved by technology

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to solve the technical problem of unscientific fertilization in the prior art, and provide a test method for the response of different rice varieties to slow-release urea. This assay method is simple and can accurately measure different The response of rice varieties to slow-release urea is different, so as to select the best fertilization treatment method for the corresponding rice varieties

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