中国农业科学 ›› 2018, Vol. 51 ›› Issue (23): 4459-4469.doi: 10.3864/j.issn.0578-1752.2018.23.006
收稿日期:
2018-06-13
接受日期:
2018-07-20
出版日期:
2018-12-01
发布日期:
2018-12-12
基金资助:
REN LiRui(),CHEN FuLiang(
),YIN MingMing(
)
Received:
2018-06-13
Accepted:
2018-07-20
Online:
2018-12-01
Published:
2018-12-12
摘要:
【目的】优化静电喷雾液剂配方,研究助剂对静电喷雾液剂电导率及沉积量的影响,探寻二者之间的关系,为降低农药使用量,实现农业可持续发展提供科学依据。【方法】采用新型环保溶剂HDBE和NCC,以二甲亚砜、N-甲基吡咯烷酮和异佛尔酮作为助溶剂,设定助溶剂用量分别为0、3%、5%、7%和10%,以传统溶剂S200#作为对照。根据静电喷雾液剂质量技术指标对不同配方进行筛选。分析助剂种类及用量的变化对阿维菌素和呋虫胺两种静电喷雾液剂电导率的影响。同时,在施药前测定靶标叶面积,施药后用丙酮反复冲洗、过滤、旋蒸、定容,最后采用高效液相色谱(HPLC)测定靶标叶片上农药有效成分的沉积量,探究助剂种类和用量对黄瓜和番茄叶片正、背面沉积量的影响,分析制剂电导率与沉积量之间的关系,评价静电喷雾包抄效应。【结果】筛选出6个符合质量技术指标要求的环保型静电喷雾液剂配方;制剂电导率并非各组分电导率的加权平均数,而是各组分相互作用的结果;对于极性不同的农药有效成分配制的静电喷雾液剂,助剂种类和用量的改变对电导率和沉积量的影响趋势相同。当有效成分为非极性农药阿维菌素时,其对制剂整体电导率几乎无影响,而当采用极性较大的农药呋虫胺时,制剂整体的电导率得到显著提高,在相同助剂条件下,高出阿维菌素制剂近百倍。当溶剂为HDBE时,电导率较小,电导率和沉积量随助溶剂质量分数的提高增幅较大,差异显著。当溶剂为NCC时,由于其本身电导率较大,二者随助溶剂用量的提高增幅较小,不同配方之间的电导率差异减小。当助溶剂同为二甲亚砜时,由HDBE、NCC作为溶剂制备的静电喷雾液剂电导率及沉积量较传统溶剂S200#均显著增加,其中电导率高出5倍以上,沉积量高出1.5倍以上;静电喷雾液剂在黄瓜叶片正、背面的沉积量均大于番茄;不同配方在靶标正、背面沉积量之比在1.17—2.11。【结论】环境友好的HDBE、NCC可代替S200#成为静电喷雾的优良溶剂;助剂的种类和用量的改变对静电喷雾液剂电导率及沉积量有重要影响,通过提高制剂的电导率可以显著改善沉积量,从而提高农药有效利用率;所配制的静电喷雾液剂具有良好的静电包抄效应。
任立瑞,陈福良,尹明明. 助剂对静电喷雾液剂电导率及沉积量的影响[J]. 中国农业科学, 2018, 51(23): 4459-4469.
REN LiRui,CHEN FuLiang,YIN MingMing. Effect of Adjuvant on Conductivity and Deposition of Electrochargeable Liquid[J]. Scientia Agricultura Sinica, 2018, 51(23): 4459-4469.
表1
静电喷雾液剂配方组成成分"
配方 Formula | 有效成分 Active ingredient | 助溶剂 Cosolvent | 溶剂 Solvent |
---|---|---|---|
1 | 阿维菌素 Abamectin | 二甲亚砜 Dimethyl sulfoxide | 多元醇混合酯HDBE |
2 | 阿维菌素 Abamectin | 异佛尔酮Isophorone | 多元醇混合酯HDBE |
3 | 阿维菌素 Abamectin | 二甲亚砜Dimethyl sulfoxide | 改性氨基乙醇酯NCC |
4 | 呋虫胺Dinotefuran | 二甲亚砜Dimethyl sulfoxide | 多元醇混合酯HDBE |
5 | 呋虫胺Dinotefuran | N-甲基吡咯烷酮N-Methyl pyrrolidone | 多元醇混合酯HDBE |
6 | 呋虫胺Dinotefuran | 二甲亚砜Dimethyl sulfoxide | 改性氨基乙醇酯NCC |
CK1 | 阿维菌素Abamectin | 二甲亚砜Dimethyl sulfoxide | S200# |
CK2 | 呋虫胺Dinotefuran | 二甲亚砜Dimethyl sulfoxide | S200# |
表3
静电喷雾液剂电导率测定"
助溶剂质量分数 Mass fraction of cosolvent (%) | 电导率Conductivity (μs·cm-1) | |||||||
---|---|---|---|---|---|---|---|---|
阿维菌素Abamectin | 呋虫胺Dinotefuran | |||||||
配方1 Formula 1 | 配方2 Formula 2 | 配方3 Formula 3 | CK1 | 配方4 Formula 4 | 配方5 Formula 5 | 配方6 Formula 6 | CK2 | |
0 | 0.10±0.003e | 0.11±0.002e | 0.44±0.006c | 0b | 10.42±0.011e | 10.41±0.014e | 51.23±0.311b | — |
3 | 0.23±0.011d | 0.12±0.003d | 0.50±0.008b | 0b | 14.23±0.062d | 12.66±0.261d | 59.03±0.732a | — |
5 | 0.36 ±0.018c | 0.13±0.004c | 0.48±0.011b | 0b | 16.69±0.232c | 14.58±0.224c | 52.20±0.948ab | — |
7 | 0.48±0.004b | 0.15±0.005b | 0.51±0.015b | 0b | 20.37±0.017b | 19.80±0.013b | 55.80±0.154ab | — |
10 | 0.66±0.011a | 0.16±0.002a | 0.55±0.017a | 0.10±0.010a | 22.33±0.118a | 20.27±0.219a | 54.30±0.068ab | 4.20±0.122 |
表4
加权平均的理论电导率"
助溶剂质量分数 Mass fraction of cosolvent (%) | 理论电导率 Theoretical conductivity (μs·cm-1) | |||||
---|---|---|---|---|---|---|
阿维菌素Abamectin | 呋虫胺Dinotefuran | |||||
配方1 Formula 1 | 配方2 Formula 2 | 配方3 Formula 3 | 配方4 Formula 4 | 配方5 Formula 5 | 配方6 Formula 6 | |
0 | 0.10 | 0.10 | 0.45 | 10.42 | 10.42 | 51.21 |
3 | 0.13 | 0.11 | 0.47 | 10.45 | 10.45 | 51.24 |
5 | 0.16 | 0.12 | 0.49 | 10.47 | 10.47 | 51.25 |
7 | 0.18 | 0.12 | 0.50 | 10.50 | 10.49 | 51.27 |
10 | 0.21 | 0.12 | 0.53 | 10.53 | 10.52 | 51.29 |
表5
靶标正面沉积量"
靶标 Target | 助溶剂质量分数Mass fraction of cosolvent (%) | 沉积量Deposition (μg·cm-2) | |||||||
---|---|---|---|---|---|---|---|---|---|
阿维菌素Abamectin | 呋虫胺Dinotefuran | ||||||||
配方1 Formula 1 | 配方2 Formula 2 | 配方3 Formula 3 | CK1 | 配方4 Formula 4 | 配方5 Formula 5 | 配方6 Formula 6 | CK2 | ||
黄瓜Cucumber | 0 | 2.12±0.11c | 2.12±0.23c | 6.80±0.10b | 1.18±0.13 | 13.40±1.22c | 13.40±1.24c | 32.90±2.44ab | — |
3 | 2.83±0.32c | 2.74±0.11bc | 7.26±0.52ab | — | 20.48±0.41bc | 17.01±0.83bc | 30.10±0.36b | — | |
5 | 5.04±0.20bc | 3.18±0.09bc | 7.52±0.21ab | — | 23.40±2.16b | 20.86±4.52abc | 39.15±3.56a | — | |
7 | 7.51±0.41ab | 3.46±0.40b | 7.93±0.60a | — | 26.41±1.03b | 26.21±1.24ab | 33.00±1.10ab | — | |
10 | 8.76±0.33a | 4.97±0.36a | 7.43±0.30ab | 4.86±0.31 | 31.58±0.67a | 30.54±3.15a | 39.35±1.66a | 20.64±0.97 | |
番茄 Tomato | 0 | 1.77±0.31b | 1.13±0.26c | 6.30±0.34c | — | 8.33±0.43c | 8.33±0.43b | 30.01±0.31c | — |
3 | 2.65±0.22b | 1.71±0.32c | 6.76±0.65b | — | 15.28±1.64bc | 11.01±1.38b | 31.46±0.69b | — | |
5 | 3.03±0.05b | 2.78±0.48b | 6.97±0.21a | — | 16.12±0.60b | 12.05±2.01b | 33.54±0.47a | — | |
7 | 5.27±0.03a | 3.88±0.22a | 6.81±0.55a | — | 20.25±1.28ab | 22.45±1.40a | 34.43±0.77a | — | |
10 | 5.86±0.11a | 4.16±0.60a | 6.46±0.30bc | — | 24.77±1.09a | 23.79±1.60a | 34.45±1.21a | — |
表6
靶标正面和背面沉积量之比"
靶标 Target | 助溶剂质量分数 Mass fraction of cosolvent (%) | 配方1 Formula 1 | 配方2 Formula 2 | 配方3 Formula 3 | 配方4 Formula 4 | 配方5 Formula 5 | 配方6 Formula 6 |
---|---|---|---|---|---|---|---|
黄瓜 Cucumber | 0 | 1.17b | 1.27b | 2.11a | 1.48a | 1.48a | 1.81a |
3 | 1.35a | 1.36a | 1.56b | 1.50a | 1.28b | 1.62b | |
5 | 1.29a | 1.33a | 1.49b | 1.41a | 1.42a | 1.65b | |
7 | 1.30a | 1.22b | 1.70b | 1.30a | 1.39a | 1.69b | |
10 | 1.21a | 1.21b | 1.67b | 1.46a | 1.40a | 1.63b | |
番茄 Tomato | 0 | 1.69a | 1.49ab | 1.63ab | 1.88ab | 1.88a | 1.67a |
3 | 1.64ab | 1.51ab | 1.65ab | 2.01a | 1.85a | 1.66a | |
5 | 1.63ab | 1.54a | 1.79a | 1.76ab | 1.67ab | 1.64a | |
7 | 1.56b | 1.42ab | 1.67ab | 1.84ab | 1.61ab | 1.59a | |
10 | 1.54b | 1.39b | 1.56b | 1.65b | 1.52b | 1.41a |
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