广西农学报
廣西農學報
엄서농학보
JOURNAL OF GUANGXI AGRICULTURE
2009年
3期
25-26,64
,共3页
中9A%稻粒黑粉病%发生原因%防治
中9A%稻粒黑粉病%髮生原因%防治
중9A%도립흑분병%발생원인%방치
Zhong 9A%rice kernel smut(Neovossia horrida)%occurrence reasons%prevent and control
稻粒黑粉病在中9A制种中发病较为普遍.经过多年制种生产实践,发现罹病原因主要是亲本种子和土壤带病菌、柱头大和外露率高、母本花期偏早柱头外露时间长、扬花期间遇上阴雨天气、喷施"九二0"和施肥不当等,提出做好亲本种子杀菌处理及制种基地实行轮作、合理安排播期和调节扬花期、科学肥水管理、培育健壮禾苗群体、科学喷施"九二0"改善穗层结构及药物防治等措施.
稻粒黑粉病在中9A製種中髮病較為普遍.經過多年製種生產實踐,髮現罹病原因主要是親本種子和土壤帶病菌、柱頭大和外露率高、母本花期偏早柱頭外露時間長、颺花期間遇上陰雨天氣、噴施"九二0"和施肥不噹等,提齣做好親本種子殺菌處理及製種基地實行輪作、閤理安排播期和調節颺花期、科學肥水管理、培育健壯禾苗群體、科學噴施"九二0"改善穗層結構及藥物防治等措施.
도립흑분병재중9A제충중발병교위보편.경과다년제충생산실천,발현리병원인주요시친본충자화토양대병균、주두대화외로솔고、모본화기편조주두외로시간장、양화기간우상음우천기、분시"구이0"화시비불당등,제출주호친본충자살균처리급제충기지실행륜작、합리안배파기화조절양화기、과학비수관리、배육건장화묘군체、과학분시"구이0"개선수층결구급약물방치등조시.
Rice kernel smut is occurring frequently in Zhong 9A seed production. After long-time practice, it is discovered that there are six occurrence reasons such as parents seed and soil germcarrier etc. This paper has put forward some measures such as parents seed sterilization, crop rotation, rational seeding, flowering stage adjustment, rational fertilization and irrigation, fostering strong seedlings, "920" application and chemical control etc.
