摘要
室温下,用1500倍速克灵、3000mg/L硝酸稀土、1500倍速克灵+3000mg/L硝酸稀土、2000倍速克灵+3000mg/L硝酸稀土、2500倍速克灵+3000mg/L硝酸稀土、3000倍速克灵+3000mg/L硝酸稀土的混剂喷施番茄幼苗,间隔不同时间接种番茄灰霉病菌,测定其防病效果及番茄叶片内丙二醛含量和多酚氧化酶活性。结果表明:不同处理在喷施后第15天时,对番茄灰霉病的防病效果最为理想,其中1500倍速克灵+3000mg/L硝酸稀土的混剂的效果最好,防效达96.10%,1500倍速克灵、3000mg/L硝酸稀土和2000倍速克灵+3000mg/L硝酸稀土、2500倍速克灵+3000mg/L硝酸稀土、3000倍速克灵+3000mg/L硝酸稀土的混剂次之。喷施1500倍速克灵+3000mg/L硝酸稀土混剂的植株丙二醛含量最低,为30.54(mmol·g),多酚氧化酶活性最高,为73(0.01A/min)。说明稀土与速克灵混合具有良好的抑菌和增抗作用。
At room temperature,tomato seedlings firstly were fertilized with mixtures which contain 1500 times Procymidone,3000mg/L Rare Earth Nitrate,1500 times Procymidone plus 3000mg/L Rare Earth Nitrate and 3000 times Procymidone plus 3000mg/L Rare Earth Nitrate,and then were inoculated with Botrytis cinerea at various intervals,gauging the control effects of diseases,the amount of MDA and the activity of PPO in tomato leaves.The experiment result showed：The ideal period of control effects to Botrytis cinerea Pers.is 15 days after being fertilized,among which the most protective mixture is 1500 times Procymidone plus 3000mg/L Rare Earth Nitrate,94.52%,followed by mixtures of Procymidone,Rare Earth Nitrate and 3000 times Procymidone plus 3000mg/L Rare Earth Nitrate.,in range of 57%～89%.The tomato seedlings,with 1500 times Procymidone plus 3000mg/L Rare Earth Nitrate,contains MDA least only 30.54（mmol·g-1）,with 73（0.01 A/min） activity of PPO,the highest.This experiment data demonstrated the mixture of Rare Earth Nitrate and Procymidone had a strong effects on the diseases.
出处
《中国西部科技》
2011年第3期31-32,16,共3页
Science and Technology of West China
关键词
硝酸稀土
速克灵
番茄灰霉病
丙二醛含量
多酚氧化酶活性
Rare Earth Nitrate
Procymidone
Botrytis cinerea Pers
The amount of MDA
The activity of PPO
