论文部分内容阅读
本文探讨了杂交水稻制繁种中使用“920”的方法和效果。试验分别于78、79、82年完成。试验项目与方法包括:1.“920”使用时期与使用浓度。使用时期分:双零叶期(即剑叶叶忱距为零)、剑叶叶忱距5—10厘米、幼穗破肚至抽出一寸左右三种;每一时期用10、15、20单位三种浓度,不喷为对照;2.“920”对解决不育系包颈的效果:在幼穗抽出一寸左右,用15单位从上向下喷施,待干后重喷一次,相应的22个穗不喷为对照;3.“920”对柱头外露与结实的效果:母本抽穗初期喷20单位一次,不喷为对照;4.用“920”对父母本进行不同处理创造父
This article explored the method and effect of using “920” in the breeding of hybrid rice. The tests were completed in 78, 79, 82 years respectively. Test items and methods include: 1. “920” period of use and concentration. Period of use points: double zero-leaf period (that is, the distance between the leaves of the flag leaves zero), the flag leaves leaves distance of 5-10 cm, spikelets break to extract an inch or so; each period with 10,15,20 units Three concentrations, not sprayed as a control; 2. “920” to solve the sterile effect of the neck of the package: in the panicle out about an inch, with 15 units spray from top to bottom, to be dry and then spray again, the corresponding 22 spike is not sprayed as a control; 3. “920” on the stigma exposed and strong effect: 20 days early spraying of the mother of the parent unit once, not sprayed as a control; 4. “920”