优良水稻品种吉粳63号高产栽培技术体系的研究——综合农艺措施与产量的函数模型分析

AN STUDY ON HIGH YIELD TECHNOLOGY SYSTEM OF RICE VARIETY JIJING 63 ANALYSES GF SYNTHETICAL AGRONOMY PRACFICES AND FUNCTION PATTERN OF YIELD

摘要:

采用正交回归旋转组合设计,对吉粳63号栽培上五个主要可控因素进行了研究,结果表明,(1)吉粳63号水稻品种的平均产量效应为每公顷8045公斤,最大产量潜力可达每公顷8960公斤。(2)主要栽培措施对吉粳63号产量作用的大小顺序为插秧苗数>插秧期>施 N 量>插秧方式>播种期。(3)预测公顷产量在8000公斤以上时,主要栽培因素应采用的数量为:播种期4月16～4月17日,插秧期5月21～5月22日,施 N 量172～178公斤/公顷,插秧方式26.7×13.3cm,插秧苗数4～5.4个/穴。(4)如果不考虑播种期和插秧期这两个因素,取得最佳经济效益时的栽培措施为每公顷施氮量156公斤,插秧方式26.7×10cm,每穴插秧3苗。

Abstract:

Adopting the orthogonal-gyrating-regression disign,5main elements for cultivation of Jijing 63 were studied.The results showed:（1）The average yield level of Jijing 63 was 8045 kg per ha.and the highest yield reached 8960kg/ha.（2）The effect of planting practices on Jijing 63 was in the order:the transplanted seedlings＞the date of transplanting seedlings＞the amount of applied fertilizer（N）＞the way of transplan- ting seedlings＞seeding time。（3）If yield over 8000kg per ha.is expe- cted the following practices must be adopted:April 16～17 for seeding time,May 21～22 for the date of transplant rice seedlings,172～178kg per ha for the amount of applied fertilizer（N）,26.4×13.2cm,for the way of transplanting seedlings and 4.9～5.4 seedlings per hill for the numbers of transplanting seedings（4）If seeding time and transpla- nting date were not eonsidered,to get the best economic gain the amount of applied fertitizer（N）should be applied at 156kg perha,the way of transplanting seedlings:26.4×9.9cm,and with 3 seedlings per hill。