【摘 要】
：
Regressive models were obtained by employing 311-B and 3414 optimal regressive desingns throughrn5-year (1993～1997) field experiment,and by datum processing with
【机 构】
：
Soil and Fertilizer Station of Heilongjiang Province Harbin 150010 PRC“,”Extension Centre of Agricul
论文部分内容阅读
Regressive models were obtained by employing 311-B and 3414 optimal regressive desingns throughrn5-year (1993～1997) field experiment,and by datum processing with computer. These models express the re-rnlationships between c yields in high,middle and low yield areas and N,P,and K application rates in blackrnsoil. By analysis to the models, the fertilizer application rates for maximum yield and optimal yield werernachieved.
其他文献
瓜奇果异大观园是延庆首批国家级生态示范区,生态环境优良,空气清新,水质洁净,先后荣膺“全国绿化模范县”“国家园林县城”等殊荣。优良的生态环境,为延庆发展
Guagui frui
The development of strawberry fruit, two cultivars-Gelila and Xiaoshi, was systematically studied by anatomical and embryological methods. The growth dynamics o
突发性耳聋是一种较常见的原因不明的、突然发生的感音神经性耳聋,多表现为单侧耳聋与病毒感染和局部血液循环障碍有关,指突然发生的,可在数分钟、数小时或三天以内,原因不明
慢性荨麻疹是一种常见的皮肤病,其病因复杂.主要属于I型变态反应,由各种因素致使皮肤粘膜血管发生暂时性炎性充血与大量液体渗出.造成局部水肿性的损害.常找不到病因,患者不
The aim of Experiment 1 was to compare the effect of two different activating time on parthenogenetic embryonic development. Oocytes which were aspirated, coll
以低摩尔比脲醛树脂中密度纤维板为研究对象，选择温度和时间为试验因素，采用 Design－Expert 8．0．6进行试验设计，比较了等温热处理前后中密度纤维板的性能变化。结果表明：等温热处理
Employing the pot experiment of the complete random block design with 6 replications,four varieties ofrnjaponica rice (Fujisaka 5,Honenwase,Akitakomachi and Tai
目的 探讨宫颈电环切术治疗宫颈病变临床效果.方法 回顾我院2008.1～2009.12门诊治疗128例病例分析.结果 本组总结的128例,治愈率99.74%(123例),显效0.26%(5例),无效0例.结论
Fourteen inbreds of maize were tested for the tolerance to chlorsulfuron with the method of seedling wa-rnter culter. Significant difference existed in the tole
外阴阴道假丝酵母菌病(vulvovaginal candidiasis,VVC)是由假丝酵母菌引起的常见外阴阴道炎症.国外资料显示,约75 %妇女一生中至少患过一次VVC,45%妇女经历过2次或2次以上发