WO2012075689A1 - 富硒水稻秧苗、其培育方法及生产的富有机硒大米 - Google Patents

富硒水稻秧苗、其培育方法及生产的富有机硒大米 Download PDF

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WO2012075689A1
WO2012075689A1 PCT/CN2011/070104 CN2011070104W WO2012075689A1 WO 2012075689 A1 WO2012075689 A1 WO 2012075689A1 CN 2011070104 W CN2011070104 W CN 2011070104W WO 2012075689 A1 WO2012075689 A1 WO 2012075689A1
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selenium
rice
enriched
cultivating
seedling
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PCT/CN2011/070104
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English (en)
French (fr)
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李飞
李伟
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苏州硒谷科技有限公司
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Publication of WO2012075689A1 publication Critical patent/WO2012075689A1/zh

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G22/00Cultivation of specific crops or plants not otherwise provided for
    • A01G22/20Cereals
    • A01G22/22Rice

Definitions

  • the invention relates to a rice seedling for producing machine-rich selenium rice, and a method for cultivating and applying the rice seedling. It belongs to the field of agricultural fertilization and agronomic technology. Background technique
  • Rice is the main food crop in China.
  • the population of rice as the main food in the country accounts for about the total population.
  • Selenium the elemental symbol Se, is an essential trace element in human body and is the active center of glutathione peroxidase (GSH-Px). It has anti-cancer, anti-aging (anti-oxidation) and enhances human immunity, antagonizing heavy metals. And other biological characteristics. Selenium in the food chain is mainly derived from the soil. The uneven distribution of selenium in the soils of different regions is based on the implementation of local selenium-enriched soil clues and the implementation of targeted selenium-enriched work. Optimizing the selenium content in the food chain is an important direction of agricultural production research.
  • Selenium in agricultural products is divided into two major categories: inorganic selenium and organic selenium: the former includes selenate and selenite.
  • Inorganic selenium has poor absorption effect on humans and animals, and has high toxicity risk. It is easy to cause selenium when used improperly. Poisoning; The latter mainly includes seleno amino acids, selenoproteins, selenium polysaccharides, etc. It has good absorption effect on humans and animals, and is less toxic, which is more suitable for selenium supplementation.
  • Selenium-enriched agricultural products are an effective way for human body to supplement selenium. Therefore, selenium-enriched technology is a hot spot for scientists to research and develop and put into practical production.
  • the inorganic selenium must be combined with the organic ligand in the intestine before being absorbed by the body, it can be absorbed and utilized by the body, and there is a presence in the intestine.
  • a variety of elements compete with selenium for limited ligands, which is not conducive to human absorption and utilization, and inorganic selenium has obvious toxic effects on the body.
  • the second is to plant rice with strong enrichment ability in natural selenium-enriched areas.
  • This method can produce rice with higher selenium content than ordinary rice.
  • due to the geographical difference in soil selenium content in selenium-enriched areas it is impossible to quantitatively control the selenium content in rice, which may exceed the national limit standard. Geographical limitations and instability are not conducive to large-scale standardized production.
  • the third is to apply selenium-enriched fertilizer during the tillering stage of rice, such as Chinese patent CN101791081A.
  • This method can ensure that the rice reaches the selenium-rich standard, no inorganic selenium residue, and increase the organic selenium content of rice.
  • due to the special paddy field planting method in rice it is easy to cause the loss of selenium fertilizer during the paddy field irrigation and water discharge operation, reduce the utilization rate of selenium fertilizer, and the lost selenium easily increases the burden of selenium in the soil and water environment. Pollution.
  • the related well-known techniques are not related to selenium-enriched rice seedlings, rice rich in organic selenium, and production methods for specifically cultivating organic selenium-enriched rice.
  • the object of the present invention is to provide a machine-rich selenium rice, which solves the problems of lack of selenium-enriched rice seedlings, rice rich in organic selenium and production methods of specifically cultivating machine-rich selenium rice in the prior art.
  • the technical solution provided by the present invention is: a selenium-enriched rice seedling for producing selenium-enriched rice, characterized in that the total amount of selenium in the selenium-enriched rice seedlings is 4.6 ⁇ 360 g/plant.
  • the total amount of selenium in the selenium-enriched rice seedling transplanting is 18.4 ⁇ 180 ⁇ ⁇ / strain.
  • Another object of the present invention is to provide a method for cultivating selenium-enriched rice seedlings, which comprises the steps of: adding a nano-selenium plant nutrient in a cultivating paddy soil or a nursery field in a rice breeding stage according to a rice breeding method; Steps for selenium-enriched rice seedlings.
  • the rice seed is first planted into the cultivating field according to the conventional rice seedling raising step, and when the sorghum seedling height is about 10 cm, the nano-selenium plant nutrient of the amount of l ⁇ 6 kg/mu field is used. Hook on the field, spray water to make the nutrient fully contact with the soil; Finally, according to the rice operation routine, cultivate the selenium-enriched rice seedlings.
  • the amount of the nanoselenium plant nutrient in the method is 3.0 kg/acre of field.
  • the total amount of the nutrient solution is 1000: (2 to 4).
  • a further object of the present invention is to provide an organic-rich selenium rice characterized in that the selenium-rich rice has a selenium content of 100 to 300 g/kg, wherein the organic selenium content is 80%.
  • the selenium-rich rice has a selenium content of 100 to 300 g/k g , wherein the organic selenium content is 85%.
  • the invention provides a rice seedling for producing machine-rich selenium rice, and a method for cultivating the rice seedling.
  • the invention provides the rice seedling for producing machine-rich selenium rice, and the seedlings are transplanted with a selenium amount of 4.6-360 g /plant.
  • the present invention provides a rice seedling for producing machine-rich selenium rice, and the amount of selenium in the seedling transplanting is 18.4 ⁇ 180 g/plant.
  • the invention provides a method for cultivating rice seedlings for producing machine-rich selenium rice, which is applied to a nano-selenium plant nutrient in a paddy soil or a nursery field in a rice breeding stage (Suzhou Selenium Valley Technology Co., Ltd.)
  • the company produces, model XGP001A).
  • the selenium matrix contained in the roots of the rice seedlings is brought into the field through machine transplanting or artificial transplanting.
  • the machine harvests selenium-rich rice.
  • the method also greatly improves the utilization rate of selenium in rice, avoids the segregation of selenium in the long-term production, and has good controllability to the selenium content of rice. It is a safe and reliable method for the production of machine-rich selenium rice.
  • the method for cultivating the selenium-enriched rice seedlings according to the present invention has different cultivation methods for rice seedlings according to different breeding methods.
  • the rice seed is broadcasted into the polder according to the conventional breeding step.
  • the seedling volume per acre of field is the basic unit area.
  • the amount of nano-selenium plant nutrient per unit area is 1 ⁇ 6kg.
  • the weight of nano-selenium plant nutrient is weighed by electronic scale. .
  • nano-selenium plant nutrient is hooked on the field, and the water is sprayed with a kettle or a sprayer to make the nano-selenium plant nutrient fully contact with the soil. Then, according to the routine operation of rice breeding, until the rice seedlings for producing machine-rich selenium rice are cultivated. In accordance with conventional agronomic measures, the seedlings are inserted into the field, and through a series of conventional farming management, the machine-rich selenium rice is finally harvested.
  • the nano-selenium plant nutrient per unit area is used in an amount of 3.0 kg o
  • the roots of rice seedlings have a strong adsorption effect on the nano-selenium in the nano-selenium plant nutrient, which can adsorb most of the selenium in the rhizosphere matrix. Even so, when you are squatting, pay attention to the roots of the seedlings. Rinse too clean, keep a small amount of cultivating soil.
  • nano-selenium plant nutrient 1000: 1 ⁇ 10 ratios are mixed.
  • the nursery soil mixed with the nano-selenium plant nutrient is placed in the nursery tray.
  • sowing, filming, water injection, and the like After the completion of the nursery, the conventional method is mechanically transplanted into the field, and finally the selenium-enriched rice is harvested.
  • the cultivating soil: the nano-selenium plant nutrient weight ratio is 1000: 2 ⁇ 4.
  • Planting the cultivated rice seedlings of the present invention can produce rice having a selenium content of 100 to 300 g/kg, the selenium content is 2 to 10 times higher than that of ordinary rice, and the organic selenium accounts for 80%, reaching the standard of rich selenium rice. .
  • the present invention eliminates the conventional foliar application technique and employs a safer root absorption, and the selenium in the machine-rich selenium rice produced by the present invention does not exist in an inorganic residual state. Moreover, the nano-selenium plant nutrient technology is adopted to greatly increase the conversion rate of inorganic selenium to organic selenium. Compared with inorganic selenium, organic form of selenium is safer, has no toxic side effects, and is more easily absorbed and utilized by the human body.
  • the rice seedlings provided by the invention produce the process of selenium-enriched rice, which is easy to operate and reduces the labor intensity and labor cost of the farmers. Using this method, it is ensured that the rice is provided with a quantitative and sufficient selenium source from the start of rice germination, and until the harvest period. From the beginning of seedlings, rice is absorbed from the soil and accumulates selenium. During the growth and development process, it is continuously converted into organic selenium through photosynthesis. The accumulation and transformation cycle is longer, the content is more stable, and the proportion of organic selenium is higher, reaching 80%. Above, the machine-rich selenium rice with stable quality is obtained at the end of the harvest.
  • the added nano-selenium plant nutrient is located in the soil of the rhizosphere of the rice, can be fully contacted with the rice root and adsorbed or absorbed, and greatly improves the absorption and utilization of the selenium nutrient. rate. It not only reduces the input cost, but also has a small amount of selenium remaining in the soil and water, and has little effect on selenium in the environment. It is an efficient, environmentally friendly and safe production method.
  • Example 1 Example of organic selenium-rich rice cultivation In a rice planting base, the steps of cultivating machine-rich selenium seedlings were carried out according to the method of cultivating stalks in the field, and 6 groups of seedlings were cultivated. Each group was cultivated for the seedlings of 5 mu of field transplanting.
  • Control group No. 1 Yubatian was produced according to the conventional squatting and transplanting process. After harvesting the rice, the total selenium content and the ratio of organic selenium to total selenium were randomly sampled. The results are shown in Table 1.
  • Experiment 1 group When the seedlings of No. 2 Yutiantian were unearthed for about 10 cm, the 5 kg nano-selenium plant nutrient was weighed with the electronic scales, and they were all sprinkled on the field, and then sprinkled with water in a watering can to remove the nano-selenium plants on the leaves of the seedlings. The nutrients are all washed up and attached to the nursery soil to avoid being blown away by the wind. Then, according to the routine operation, after harvesting the rice, the total selenium content and the proportion of organic selenium are randomly sampled. The results are shown in Table l o
  • Table 1 shows the experimental results of cultivating machine-rich selenium rice seedlings and producing machine-rich selenium rice in Putianyu Group number control group experiment group 1 experiment group 2 experiment group 3 experiment group 4 experiment group 5 group total selenium content
  • Example 2 Example of organic selenium-rich rice cultivation
  • Control group According to the conventional method of seedling transplanting, 5 mu of rice was planted. After harvesting the rice, the total selenium content and the proportion of organic selenium in rice were randomly sampled. The results are shown in Table 2.
  • Experiment group 1 According to the amount of mechanical transplanting of 5 mu field, the nutrient of the seedling soil and the nano-selenium plant were uniformly mixed according to the ratio of 1000:1, and then the nursery soil was put into the tray according to the conventional operation, sowing, breeding, transplanting until harvesting After rice, the total selenium content and the ratio of organic selenium were randomly sampled. The results are shown in Table 2.
  • Experiment 5 According to the amount of mechanical transplanting of 5 mu of field, the nutrient of the seedling soil and the nano-selenium plant were mixed according to the ratio of 1000:10. Then, according to the conventional operation, the seedling soil was loaded into the tray, seeded, bred, and transplanted until After harvesting rice, random sampling is used to detect the total selenium content and the ratio of organic selenium. The results are shown in Table 2.
  • Table 2 shows the experimental results of the machine-rich selenium seedlings and the production of machine-rich selenium rice by the cultivation of the seedlings and the mechanical transplanting of the seedlings.

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Description

富硒水稻秧苗、 其培育方法及生产的富有机硒大米 技术领域
本发明涉及一种用于生产富有机硒大米的水稻秧苗, 以及该水稻秧苗的 培育及应用方法。 属于农业施肥和农艺技术领域。 背景技术
大米是我国的主要粮食作物,全国以大米为主食的人口约占总人口数的
50%。 我国水稻种植面积达 2996 万公顷, 分布区域辽阔。 由于粮食压力等 历史原因, 我国水稻生产过去以高产为目标, 对稻米量元素含量的重视程度 较低, 随着居民生活水平的日益提高及对外贸易的发展, 水稻的富微量元素 技术开发将会受到更多的重视。
硒, 元素符号 Se, 是一种人体必需微量元素, 是谷胱甘肽过氧化物酶 (GSH-Px)的活性中心.具有抗癌、 抗衰老 (抗氧化) 和提高人体免疫力、 拮 抗重金属等生物学特性。 食物链中的硒主要来源于土壤。 不同地区土壤中硒 含量分布不均勾的, 依据局部贫硒土壤线索实施和开展针对性的富硒工作, 优化食物链中的硒含量水平是农业生产研究的一个重要方向。我国有 72 %的 县 (市) 低硒或缺硒, 黑龙江、 内蒙古、 甘肃、 青海、 四川等严重缺硒地区 有克山病、 大骨节病发生, 一些癌症高发区 (如江苏启东市) 也属低硒区。 中国营养学会推荐人均每日硒摄入量为 50-200 微克。 但现在我国成人的日 硒摄入量仅有 26-32微克, 因此, 硒营养不良的情况在我国普遍存在。 WHO 公布的资料表明, 全球有 40多个国家属于低硒或缺硒地区。
农产品中的硒总体分为无机硒和有机硒两大类: 前者包括硒酸盐、 亚硒 酸盐等, 无机硒对于人和动物来说吸收效果差, 毒性风险大, 使用不当极易 造成硒中毒; 后者主要包括硒代氨基酸、 硒代蛋白、 硒多糖等形态, 对人和 动物来说吸收效果好, 毒性小, 更适合补硒的要求。 富硒农产品是人体补充 硒元素有效途径, 因此, 富硒技术是科学家们研究开发并付诸实际生产的热 点领域。 水稻在居民饮食结构中的重要地位, 决定了其硒含量水平对全民硒 营养状况有很大的影响。 目前国内富有机硒大米生产方式主要有以下几种: 一种是在水稻灌浆期喷施无机硒溶液,使水稻快速吸收无机硒从而达到 富硒水平。 如中国专利 CN101182246A。 该方法中富硒营养剂技术含量低, 实施方式较为复杂, 需喷施 5〜6 次, 而且最终大米中无机硒残留量很大, 由于无机硒吸收前必须先与肠道中的有机配体结合才能被机体吸收利用, 而 肠道中存在着多种元素与硒竞争有限配体, 不利于人体吸收利用, 而且无机 硒对机体有明显的毒害作用。
二是在天然富硒地区种植富集能力较强的水稻,此方法可生产出比普通 大米硒含量更高的大米。 但由于富硒地区土壤硒含量存在地域差异, 无法对 大米中硒含量进行定量控制, 有可能超过国家限量标准。 存在地域局限和不 稳定性, 不利于大规模的标准化生产。
三是在水稻分蘖期追施富硒肥料, 如中国专利 CN101791081A。 此方法 可以保证大米达到富硒标准, 无无机硒残留, 提高大米有机硒含量。 但因为 水稻特殊的水田种植方式, 在稻田灌水和放水操作过程中容易导致硒肥的流 失, 降低硒肥利用率, 而且流失的硒容易增加土壤和水体环境中硒的负担, 长期使用易导致硒污染。 但是, 相关的公知技术均设未涉及富硒水稻秧苗、 富含有机硒的大米, 以及具体培育富有机硒大米的生产方法。
发明内容
本发明目的在于提供一种富有机硒大米,解决了现有技术中缺少富硒水 稻秧苗、 富含有机硒的大米以及具体培育富有机硒大米的生产方法等问题。
为了解决现有技术中的这些问题, 本发明提供的技术方案是: 一种用于生产富有机硒大米的富硒水稻秧苗,其特征在于所述富硒水稻 秧苗移栽时总带硒量为 4.6~360 g/株。
优选的, 所述富硒水稻秧苗移栽时总带硒量为 18.4~180μ§/株。
本发明的另一目的在于提供一种富硒水稻秧苗的培育方法,其特征在于 所述方法包括在水稻育秧阶段, 在秧盘育秧土或育秧田中加入纳米硒植物营 养剂按照水稻育秧方法培育出富硒水稻秧苗的步骤。
优选的, 通过秧田田畦育秧时, 先按常规水稻育秧步骤将水稻种子播入 育秧田, 出秧后秧苗高 10 cm左右时, 将用量 l〜6kg/每亩大田的纳米硒植 物营养剂均勾撒于秧田上, 喷洒水使营养剂与田土充分接触; 最后按照水稻 育秧常规操作, 培育出富硒水稻秧苗。
优选的, 所述方法中纳米硒植物营养剂的用量为 3.0 kg/每亩大田。 优选的, 通过秧盘育秧时, 在育秧土装盘前, 按重量比育秧土 : 营养剂 = 1000: ( 1〜10 )的比例均匀混合后,将混合有营养剂的育秧土装入育秧盘, 然后按照常规水稻育秧方式, 培育出富硒水稻秧苗。
优选的, 所述方法中育秧土 : 营养剂总量比为 1000: ( 2〜4 )。
本发明的又一目的在于提供一种富有机硒大米,其特征在于所述富有机 硒大米的硒含量为 100〜300 g/kg, 其中有机硒含量 80%。
优选的, 所述富有机硒大米的硒含量为 100〜300 g/kg, 其中有机硒含 量 85%。
本发明提供一种用于生产富有机硒大米的水稻秧苗, 以及该水稻秧苗的 培育方法。 本发明提供的用于生产富有机硒大米的水稻秧苗, 秧苗移栽时带 硒量为 4.6~360 g/株。作为优选, 本发明提供的用于生产富有机硒大米的水 稻秧苗,, 秧苗移栽时带硒量为 18.4~180 g/株。
本发明提供一种用于生产富有机硒大米的水稻秧苗培育方法,所述水稻 秧苗是通过在水稻育秧阶段, 在秧盘育秧土或育秧田中施入纳米硒植物营养 剂(苏州硒谷科技有限公司生产, 型号为 XGP001A ) , 育秧完成后通过机插 秧或人工插秧, 将水稻秧苗根部所带含硒基质带入大田, 结合正常生产的水 肥管理, 最终收获富有机硒大米。 该方法还大幅提高了水稻对硒的利用率, 避免长期生产流失的硒对环境产生污染, 对大米硒含量有很好的可控性。 是 一种安全可靠的富有机硒大米的生产方法。
本发明所述的富硒水稻秧苗的培育方法, 根据不同的育秧方式, 水稻秧 苗的培育方式不同。 以秧田田畦育秧方式进行富硒水稻苗的培育时, 按常规 育秧步骤至将水稻种子播入秧田。 出秧后秧苗高 10 cm左右时, 以每亩大田 插秧用苗量为基本单位面积, 按照每个单位面积纳米硒植物营养剂用量 1〜 6kg , 用电子秤称取需要重量纳米硒植物营养剂。 将称好的纳米硒植物营养 剂均勾撒于秧田上, 用水壶或喷雾器喷洒一遍清水, 使纳米硒植物营养剂与 田土充分接触。 之后按照水稻育秧常规操作, 直到培育出用于生产富有机硒 大米的水稻秧苗。 再按照常规农艺措施, 将秧苗***大田, 通过一系列常规 耕作管理, 最后收获富有机硒大米。 作为优选, 单位面积纳米硒植物营养剂 使用量为 3.0 kg o
水稻秧苗根部对该纳米硒植物营养剂中的纳米硒有很强的吸附作用,能 够吸附根际基质中大部分的硒。 虽然如此, 但在起秧时, 注意秧苗根部不要 冲洗的太干净, 需保留少量育秧土。
以秧盘育秧并机械插秧种植方式进行水稻秧苗培育时, 在育秧土装盘 前, 按照重量比育秧土 : 纳米硒植物营养剂 = 1000: 1〜10的比例均勾混合。 将混合有纳米硒植物营养剂的育秧土装入育秧盘。之后按照常规水稻育秧方 式, 撒种、 覆膜、 注水等。 育秧完成后常规方法机械插秧至大田, 最终收获 富硒水稻。 作为优选, 育秧土 : 纳米硒植物营养剂重量比为 1000: 2~4。
相对于现有技术中的方案, 本发明的优点是:
种植本发明的培育出的水稻秧苗, 可生产出硒含量至 100〜300 g/kg 的大米, 硒含量较普通大米提高 2〜10倍, 有机硒占比 80 %, 达到富有机 硒大米的标准。
本发明摒弃了传统的叶面喷施技术, 采用更加安全的根部吸收, 相比之 下本发明生产的富有机硒大米中的硒不会以无机残留态存在。并且采用纳米 硒植物营养剂技术, 使无机硒向有机硒转化率大幅度提高。 相对于无机硒, 有机形态的硒安全性更高, 无毒副作用, 更易于人体吸收和利用。
本发明提供的水稻秧苗生产富有机硒大米的过程, 操作简便, 降低了农 民的劳动强度和用工成本。 使用本方法, 能保证从水稻发芽后育秧开始, 一 直到收获期, 为水稻提供定量并充足的硒源。 使水稻从幼苗开始就由根部从 土壤中吸收并积累硒, 在生长发育过程中不断通过光合作用转化为有机硒, 积累和转化周期更长, 含量更稳定, 有机硒比例更高, 达到 80%以上, 最终 收获时得到质量稳定的富有机硒大米。
本发明与插秧后追施硒营养剂相比,所添加的纳米硒植物营养剂位于水 稻根际的土壤中, 能与水稻根充分接触并被吸附或吸收, 大幅度提高硒营养 剂的吸收利用率。 不仅降低了投入成本, 而且残留在土壤和水体中硒的量很 小, 对环境中硒的几乎没有影响, 是一种高效、 环保、 安全的生产方法。
具体实施方式
以下结合具体实施例对上述方案做进一步说明。 应理解, 这些实施例是 用于说明本发明而不限于限制本发明的范围。实施例中采用的实施条件可以 根据具体厂家的条件做进一步调整, 未注明的实施条件通常为常规实验中的 条件。
实施例 1 富有机硒水稻种植实例 在某水稻种植基地, 按照秧田育秧的方式培育富有机硒水稻苗的步骤, 培育秧苗 6组, 每组培育供 5亩大田插秧的用苗量。
对照组: 1号育秧田按照常规秧田育秧、 插秧过程生产, 收获大米后随 机抽样检测总硒含量和有机硒占总硒比例, 结果如表 1。
实验 1组: 2号育秧田秧苗出土 10 cm左右时, 同电子秤称取 5 kg纳米 硒植物营养剂, 均勾撒到秧田上, 再用喷壶洒一遍水, 将秧苗叶子上的纳米 硒植物营养剂全部冲到并附着在育秧土上, 避免被风吹走流失。 之后按常规 操作直到收获大米后, 随机抽样检测总硒含量和有机硒所占比例, 结果如表 l o
实验 2组: 3号育秧田秧苗出土 10 cm左右时, 同电子秤称取 10 kg纳 米硒植物营养剂, 均匀撒到秧田上, 再用喷壶洒一遍水, 将秧苗叶子上的纳 米硒植物营养剂全部冲到并附着在育秧土上, 避免被风吹走流失。 之后按常 规操作直到收获大米后, 随机抽样检测总硒含量和有机硒所占比例, 结果如 表 1。
实验 3组: 4号育秧田秧苗出土 10 cm左右时, 同电子秤称取 15kg纳 米硒植物营养剂, 均勾撒到秧田上, 再用喷壶洒一遍水, 将秧苗叶子上的纳 米硒植物营养剂全部冲到并附着在育秧土上, 避免被风吹走流失。 之后按常 规操作直到收获大米后, 随机抽样检测总硒含量和有机硒所占比例, 结果如 表 1。
实验 4组: 5号育秧田秧苗出土 10 cm左右时, 同电子秤称取 20 kg纳 米硒植物营养剂, 均匀撒到秧田上, 再用喷壶洒一遍水, 将秧苗叶子上的纳 米硒植物营养剂全部冲到并附着在育秧土上, 避免被风吹走流失。 之后按常 规操作直到收获大米后, 随机抽样检测总硒含量和有机硒所占比例, 结果如 表 1。
实验 5组: 6号育秧田秧苗出土 10 cm左右时, 同电子秤称取 30 kg纳 米硒植物营养剂, 均勾撒到秧田上, 再用喷壶洒一遍水, 将秧苗叶子上的纳 米硒植物营养剂全部冲到并附着在育秧土上, 避免被风吹走流失。 之后按常 规操作直到收获大米后, 随机抽样检测总硒含量和有机硒所占比例, 结果如 表 1。
表 1为秧田育秧培育富有机硒水稻秧苗, 并生产富有机硒大米的实验结果 分组编号 对照组 实验 1组 实验 2组 实验 3组 实验 4组 实验 5组 大米总硒含
43.5 138.1 184.4 194.7 223.6 259.4 量 pb
有机硒占比 76.1% 89.4% 85.4% 94.4% 87.5% 86.2%
实施例 2 富有机硒水稻种植实例
在某水稻种植基地,按照秧盘育秧并机械插秧的方式培育富有机硒水稻 苗的步骤, 培育秧苗共 6组, 每组培育供 5亩大田机械插秧的用苗量。 如下 操作:
对照组: 按照常规秧盘育秧机械插秧方法, 种植 5亩水稻, 最终收获大 米后, 随机抽样检测大米中总硒含量和有机硒比例, 结果如表 2。
实验 1组: 按照 5亩大田机械插秧用量, 将育秧土和纳米硒植物营养剂 按照 1000: 1的比例均匀混合, 之后按照常规操作, 将育秧土装入秧盘, 播 种、 育秧、 插秧直到收获大米后, 随机抽样检测总硒含量和有机硒比例, 结 果如表 2。
实验 2组: 按照 5亩大田机械插秧用量, 将育秧土和纳米硒植物营养剂 按照 1000: 2的比例均匀混合, 之后按照常规操作, 将育秧土装入秧盘, 播 种、 育秧、 插秧直到收获大米后, 随机抽样检测总硒含量和有机硒比例, 结 果如表 2。
实验 3组: 按照 5亩大田机械插秧用量, 将育秧土和纳米硒植物营养剂 按照 1000: 4的比例均匀混合, 之后按照常规操作, 将育秧土装入秧盘, 播 种、 育秧、 插秧直到收获大米后, 随机抽样检测总硒含量和有机硒比例, 结 果如表 2。
实验 4组: 按照 5亩大田机械插秧用量, 将育秧土和纳米硒植物营养剂 按照 1000: 8的比例均匀混合, 之后按照常规操作, 将育秧土装入秧盘, 播 种、 育秧、 插秧直到收获大米后, 随机抽样检测总硒含量和有机硒比例, 结 果如表 2。
实验 5组: 按照 5亩大田机械插秧用量, 将育秧土和纳米硒植物营养剂 按照 1000: 10 的比例均勾混合, 之后按照常规操作, 将育秧土装入秧盘, 播种、 育秧、 插秧直到收获大米后, 随机抽样检测总硒含量和有机硒比例, 结果如表 2。
表 2为实施例 2秧盘育秧并机械插秧培育富有机硒秧苗,并生产富有机 硒大米的实验结果
分组编号 对照组 实验 1组 实验 2组 实验 3组 实验 4组 实验 5组 大米总硒含
48.2 134.6 168.9 234.8 276.4 294.6 量 pb
有机硒占比 68.9% 85.4% 87.6% 94.3% 86.9% 84.2%
上述实例只为说明本发明的技术构思及特点,其目的在于让熟悉此项技 术的人是能够了解本发明的内容并据以实施, 并不能以此限制本发明的保护 范围。 凡根据本发明精神实质所做的等效变换或修饰, 都应涵盖在本发明的 保护范围之内。

Claims

权 利 要 求 书
1、 一种用于生产富有机硒大米的富硒水稻秧苗, 其特征在于所述富硒 水稻秧苗移栽时总带硒量为 4.6~360 g/株。
2、 根据权利要求 1所述的用于生产富有机硒大米的富硒水稻秧苗, 其 特征在于所述富硒水稻秧苗移栽时总带硒量为 18.4~180μ§/株。
3、 一种富硒水稻秧苗的培育方法, 其特征在于所述方法包括在水稻育 秧阶段, 在秧盘育秧土或育秧田中加入纳米硒植物营养剂按照水稻育秧方法 培育出富硒水稻秧苗的步骤。
4、 根据权利要求 3所述的培育方法, 其特征在于通过秧田田畦育秧时, 先按常规水稻育秧步骤将水稻种子播入育秧田, 出秧后秧苗高 10 cm 左右 时, 将用量 l〜6kg/每亩大田的纳米硒植物营养剂均匀撒于秧田上, 喷洒水 使营养剂与田土充分接触; 最后按照水稻育秧常规操作, 培育出富硒水稻秧 苗。
5、 根据权利要求 4所述的培育方法, 其特征在于所述方法中纳米硒植 物营养剂的用量为 3.0 kg/每亩大田。
6、 根据权利要求 3所述的培育方法, 其特征在于通过秧盘育秧时, 在 育秧土装盘前, 按重量比育秧土 : 营养剂 = 1000: ( 1〜10 ) 的比例均匀混合 后, 将混合有营养剂的育秧土装入育秧盘, 然后按照常规水稻育秧方式, 培 育出富硒水稻秧苗。
7、 根据权利要求 6所述的培育方法, 其特征在于所述方法中育秧土 : 营养剂总量比为 1000 : ( 2〜4 )。
8、一种富有机硒大米,其特征在于所述富有机硒大米的硒含量为 100〜 300 g/kg, 其中有机硒含量 80%。
9、 根据权利要求 8所述的富有机硒大米, 其特征在于所述富有机硒大 米的硒含量为 100〜300 g/kg, 其中有机硒含量 85 %。
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