摘要
水稻田间小区试验结果表明，在施纯氮１７．１ ｋｇ／６６７ｍ ２ 的基础上，于分蘖期和孕穗期喷施“植物动力２００３”（以下简称“２００３”）的两个处理稻谷实产与对照（施纯氮１９．０ ｋｇ／６６７ｍ ２ 加喷清水）的实产相比，无明显差异；同样，在施纯氮１７．１ ｋｇ／６６７ｍ ２ 处理中，无论是分蘖期或是孕穗期喷施“２００３”，其植株倒三叶叶片的叶绿素含量均高于对照。盆栽水稻１５Ｎ 示踪试验结果表明，在等氮条件下，土壤肥力水平较高的青紫泥，分蘖期喷“２００３”和孕穗期喷“２００３”两个处理，平均每盆水稻的籽粒产量和氮肥利用率分别比对照增加４．９３％ 、９．４１％ 和１．９１％ 、３．２２％ ；土壤肥力水平中等偏低的夹沙泥，分蘖期喷和孕穗期喷“２００３”两个处理，平均每盆水稻的籽粒产量和氮肥利用率分别比对照增３．３２％ 、７．３８％ 和１．６８％ 、３．５２％ 。
The results of rice field and plot experim ents indicate that there is no significant difference in rice realyield betw een the treatm ent of spraying PP2003 on rice at tillering or booting stage and using basic 17.1 kg pure nitrogen per 667 m 2 and the CK treatm ent ofusing basic 19.0 kg pure nitrogen per 667 m 2 and spraying only w ater.Whether spraying PP2003 at tillering or booting stage the chlorophyllcontents in the second leaves below flag leaves of rice plants are higher as com pared to the CK.Tracer elem ent 15N pot experim ent results indicate that on the condition of using the sam e quantity of nitrogen, spraying PP2003 at tillering or booting stage can increase the average rice grain yields and nitrogen fertilizer utilized coefficients by 4.93% or 9.41% and 1.91% or 3.22% per pot, respectively,com pared w ith the CK w hen the rice is cultured on high fertility soiland by 3. 32% or 7.38% and 1.68% or 3.52% ,respectively,com pared w ith the CK w hen the rice is cultured on the m iddle fertility soil.
出处
《上海农业学报》
CSCD
1999年第4期67-68,共2页
Acta Agriculturae Shanghai
关键词
植物动力2003
氮肥利用率
水稻
施肥
Plant pow erful nutrient solution PP2003
Tracer elem ent 15N pot experim ent
Chlorophyll
Utilized coefficientofnitrogen fertilizer
