摘要
【目的】硅肥属于一种中量元素肥料,能明显提高作物的干物质积累,缓解作物的生物和非生物胁迫,对作物生长具有促进作用。通过不同硅肥施用量探究不同硅肥用量对水稻生长的影响。【方法】以3个常规水稻为试验材料,设置4个硅肥不同用量处理,通过测定主要农艺性状、产量、茎秆强度、根系形态、茎秆硅含量等指标,研究不同硅肥施用量对水稻生长的影响。【结果】施用硅肥后水稻各生长指标测定结果均比空白对照高,且不同硅肥施用量对水稻生长影响不同,其中270 kg/hm^2高硅肥处理水稻主要农艺性状、产量、茎秆强度等指标最高,表明硅肥能促进植株营养物质的吸收与转化、提高稻谷结实率和千粒重,提升水稻产量。从根系扫描结果发现,90、180 kg/hm^2中低硅肥施用量能有效促进水稻根系生长,根系各指标比对照和高肥处理高。【结论】硅对水稻根系和植株生长等具有较好作用,同时,增施硅肥还能提升水稻植株的抗倒伏能力。
【Objective】Silicon fertilizer is a kind of multifunctional fertilizer,which can significantly increase the dry matter accumulation,alleviate the biotic and abiotic stresses,and promote the growth of crops.Effects of different application rates of silicon fertilizer on rice growth were explored.【Method】Three conventional rice varieties were taken as test materials,and 4 treatments with different dosages of silicon fertilizer were set.The indicators such as main agronomic traits,yield,stem strength,root morphology and silicon content in stem were measured to study the effects of different application rates of silicon fertilizer on the growth of rice.【Result】Based on the determination results,the indicators of rice treated silicon fertilizer were higher than those of the control,and the effects of different application rates of silicon fertilizer on the growth of rice were different.Under the high-fertilizer treatment of 270 kg/hm^2,rice had the highest indicators in the main agronomic traits,yield and stem strength,indicating that silicon fertilizer could promote the absorption and transformation of plant nutrients,increase rice seed setting rate and thousand-grain weight,and increase rice yield.From the results of root scans,it was found that the application rates of medium and low silicon fertilizers at 90 kg/hm^2 and 180 kg/hm^2 could effectively promote root growth,and root indicators were higher than those of the control and high-fertilizer treatments.【Conclusion】Silicon has a good effect on root growth and plant growth.At the same time,the increase of silicon fertilizer can improve the lodging resistance of rice plants.
作者
王茂辉
聂金泉
任勇
林肖楠
李珂清
钟春燕
WANG Maohui;NIE Jinquan;REN Yong;LIN Xiaonan;LI Keqing;ZHONG Chunyan(Zhaoqing Institute of Agricultural Sciences,Zhaoqing 526070,China;College of Biology&Pharmacy,Yulin Normal University,Yulin 537000,China)
出处
《广东农业科学》
CAS
2020年第2期61-67,共7页
Guangdong Agricultural Sciences
基金
广东省乡村振兴战略专项(粤农计〔2018〕33号)。
关键词
硅肥
水稻
农艺性状
抗倒伏
silicon fertilizer
rice
agronomic traits
lodging resistance
