CAJ | 학술논문

[目的]为在土壤-水稻生态系统中有效防控重金属污染及合理使用肥料提供理论依据.[方法]通过分析重金属及施用磷肥对水稻生长发育及其生态系统的影响,总结出磷肥的最佳施用量及水稻重金属污染的研究方向.[结果]适当施用磷肥能增加水稻产量,改善稻谷品质,加速水稻植株分蘖,促进幼穗分化、灌浆和籽粒饱满,提高作物的抗逆性.过量施用磷肥将会消耗作物内贮存的糖分和能量,诱发土壤缺锌,造成水稻缺硅症和缺钼症.过量重金属进入植物体内,会对植物细胞膜系统造成伤害,使其体内的各种生理生化过程发生紊乱,导致供给植物生长的物质和能量减少,进而抑制植物生长.[结论]该研究为防治施用磷肥导致的水稻重金属污染提供了理论依据.
[목적]위재토양-수도생태계통중유효방공중금속오염급합리사용비료제공이론의거.[방법]통과분석중금속급시용린비대수도생장발육급기생태계통적영향,총결출린비적최가시용량급수도중금속오염적연구방향.[결과]괄당시용린비능증가수도산량,개선도곡품질,가속수도식주분얼,촉진유수분화、관장화자립포만,제고작물적항역성.과량시용린비장회소모작물내저존적당분화능량,유발토양결자,조성수도결규증화결목증.과량중금속진입식물체내,회대식물세포막계통조성상해,사기체내적각충생리생화과정발생문란,도치공급식물생장적물질화능량감소,진이억제식물생장.[결론]해연구위방치시용린비도치적수도중금속오염제공료이론의거.
[Objective]The research aimed to supply theoretical foundation for effectively controlling the heavy metal pollution and reasonably applying fertilizers in soil-rice ecosystem. [Method]Through analyzing the influences of heavy metal and phosphate application on the growth, development and ecosystem of rice, the optimum application amount of phosphate fertilizer and the research direction on heavy metal pollution in rice were summed up. [Result]The appropriate phosphate application could increase the yield of rice, improve its quality, speed up the tillering of its plants, promote the differentiation and grain filling of its young panicles and the formation of full grains and enhance its stress-resistance. The excessive phosphate application would consume the sugar and energy stored in crops, induce zinc deficiency in soil and cause silicon and molybdenum deficiency in rice. The excessive heavy metal in plant would damage its cellular membrane system, induce its various intracorporal physiological and biochemical processes to be disorder, result in the decrement of matter and energy supplying for its growth, so its growth would be inhibited. [Conclusion]The research supplied theoretical foundation for controlling the heavy metal pollution in rice caused by phosphate application.