Nutrient content-saving paddy root-flourishing wither-inhibiting fertilization method

A fertilization method and rice technology, which are applied in the directions of fertilization methods, rice cultivation, fertilization devices, etc., can solve the problems of insufficient utilization of fertilizer nutrients, ecological environment pollution, waste of fertilizer resources, etc., reduce ineffective tillers, increase planting density, prevent The effect of obesity and premature aging

Inactive Publication Date: 2006-07-26
广东省农业科学院土壤肥料研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings in the above-mentioned prior art, aiming at the characteristics of rice root development induced by conventional grading fertilization and the resulting inability to fully utilize fertilizer nutrients, poor lodging resistance, and severe nutrient stress. Waste of fertilizer resources caused by loss, increase in production costs, and ecological environment pollution, etc., provide a fertilization method that saves nutrient consumption and suppresses decline of rice roots, which can make more scientific and reasonable use of fertilizer nutrients, reduce waste of fertilizer resources, and reduce nutrient loss Ecological environmental pollution caused, reduce production costs, improve rice production efficiency

Method used

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  • Nutrient content-saving paddy root-flourishing wither-inhibiting fertilization method
  • Nutrient content-saving paddy root-flourishing wither-inhibiting fertilization method
  • Nutrient content-saving paddy root-flourishing wither-inhibiting fertilization method

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Experimental program
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Effect test

Embodiment 1

[0019] Embodiment one pot experiment

[0020] The experiment was carried out in the Soil and Fertilizer Research Institute of Guangdong Academy of Agricultural Sciences from late rice in 2003 to late rice in 2005. Before the test, all the soil was crushed, passed through a 5cm sieve, mixed evenly, and placed in pots. Micro holes were drilled in the bottom of each pot to allow a small amount of water to drain out. The soil weight of each pot is 12 kg. The rice varieties used include conventional high-quality rice (Yuexiangzhan, Yuexinzhan No. 2) and super rice (Yuxiangyouzhan, Guinongzhan, Yueza 122). All experiments were transplanted when rice seedlings had one leaf and one heart, with 4 holes per pot and 2 seedlings per hole.

[0021] Four treatments were set up in the conventional high-quality rice experiment, including conventional divided fertilization (control 1, ck1), one-time fertilization (control 2, ck2), vigorous root nutrient management, and no fertilization. Eac...

Embodiment 2

[0026] Embodiment two field test

[0027] The test was carried out on late rice in 2003 and early rice in 2004. The soil used for the test was red red soil paddy soil. The basic chemical properties were pH5.2, organic matter 8.7g / kg, alkaline nitrogen 25.5mg / kg, available phosphorus 6.4mg / kg, available Potassium 45.6mg / kg. The late rice variety in 2003 was Jiuqixiang, and the early rice variety in 2004 was Yuexiangzhan.

[0028] In 2003, four treatments were set up in the late rice experiment, including conventional batch application of special fertilizer (ck, referred to as conventional batch application, the same below), one-time application of slow-release fertilizer 1 (abbreviated as slow-release fertilizer 1, the same below), slow-release fertilizer 2 One-time application (abbreviated as slow-release fertilizer 2, the same below), and slow-release fertilizer 2 Wanggen anti-aging nutrient management 1 (abbreviated as Wangroot anti-aging nutrient management 1, the same bel...

Embodiment 3

[0033] Adopt the 2 fertilization conditions of 2004 early rice flourishing root suppression nutrient management in embodiment two:

[0034] The first step is to determine that the total amount of fertilization is 75% of conventional fertilization, that is, the amount of nitrogen, phosphorus, and potassium per mu is 7.50, 2.28, and 6.52 kilograms respectively;

[0035] The second step is to use 70% of the fertilizer as the base fertilizer and apply it in the whole tillage layer when the rice seedlings are transplanted;

[0036] The third step is to use the remaining 30% of the fertilizer as topdressing, and apply it to the soil surface at one time after the rice seedlings are transplanted for 40 days.

[0037] Rice seedlings are planted at a density that increases by 8% compared to conventional fertilization, that is, from the current planting density of 14,000 holes per mu to 15,000 holes.

[0038] Such as figure 1 , 2 , shown in 3, the rice root growth condition A that ado...

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Abstract

The invention discloses a method of dressing for preventing root from decaying and saving fertilizer consumption, cultivating the rice seedling according to density which is increased by 8-12% than normal dressing; the fertilizer consumption is 75-90%b of that of normal dressing, among which 70-85% of fertilizer is used as base fertilizer when replanting rice seedling for whole plough layer; the left 15-30% is used as additional dress after 35-45 days of replanting. The invention can promote rice root growth, which is good for adsorbing nutrition from soil and fertilizer thoroughly to intensify property of lodging resistant; dramatically reduce dressing process; reduce azophoska consumption by 10-25%, which saves fertilizer resource and reduces ecological pollution caused by nutrition loss; reduce invalid tiller, increase ear survival rate, increase granule population of each ear and increase economical benefit of rice production.

Description

technical field [0001] The invention relates to the technical field of rice planting, in particular to a fertilization method for suppressing decline of rice vigorous roots and saving nutrient consumption. Background technique [0002] Rice is the grain crop with the largest planting area in my country, and it needs 7 to 9 million tons of fertilizer (pure nutrient) annually, accounting for about 17 to 20% of my country's chemical fertilizer consumption. South China is an important rice production area in my country. At present, in rice production, the fertilizers used by farmers are generally special fertilizers or ammonium bicarbonate combined with superphosphate as base fertilizer, and urea and potassium chloride as top dressing; the fertilization method is generally 1 time Base fertilizer, topdressing three times 5, 10-12, 20-25 days after transplanting, some farmers also need topdressing once at the booting stage; the base fertilizer accounts for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00A01G16/00A01G22/22
Inventor 唐拴虎艾绍英陈建生徐培智张发宝黄旭
Owner 广东省农业科学院土壤肥料研究所
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