水稻齐穗期补施氮肥对产量和米质的影响  

STUDY ON THE EFFECTS OF ADDING NITROGEN AT FULL HEADING STAGE OF RICE ON THE YIELD AND QUALITY

作　　者：吴福顺[1] 苏以荣[1] 欧阳郁 周隆才 

机构地区：[1]中国科学院长沙农业现代化研究所,长沙410125 [2]江西省吉安地区农业科学研究所,吉安343000

出　　处：《资源科学》1998年第S1期38-40,共3页Resources Science

摘　　要：齐穗期补施氮肥,不仅在叶片和叶鞘,而且在穗部都能保持较高的氮素含量,以合成蛋白质和叶绿素,从而提高碳素同化率。早稻主要通过增加每穗实粒数和千粒重达到增产,晚稻则通过增加有效穗、结实率和千粒重而增产。无论早稻或晚稻齐穗期补施氮肥糙米中粗蛋白含量都明显高于对照。Because of applying N fertilizer, the N content of blade leaf sheath and ear was raised, then the composing of protein and chlorophyll was improved and assimilation ratio of C was raised Early rice yield was increased by increasing the number of filled grains per ear and weight of thousand grains; late rice yield was increased by increasing valid ear, bearing ratio and thousand grains No matter what it may be early rice or late rice,the crude protein content of brown rice is significantly increased after applying N fertilizer at full heading stage

关 键 词：齐穗期 氮肥 产量 米质 

分 类 号：S511[农业科学—作物学]