Analysis Of The Effect Application Of Influence Factors On Tomato Leaves With Different Spraying Methods In Solar Greenhouse

In recent years, the greenhouse tomato planting scale expanding year by year, but with wrong spraying irrigation of pesticides, the pesticide liquid sprayed out only 25%-50% are effective deposition on crop leaves. Not only waste liquid, but also easy to cause soil and water environment pollution. In addition, the large amount of the spray used in greenhouse can cause excessive humidity in greenhouse, lead to the occurrence of plant diseases and insect pests. So in this research, by exploring the effect of nozzle type, spray height, leaf Angle, temperature, humidity in greenhouse, plant height and other factors on greenhouse tomato leaf to analyze atomization effect.1. Due to the unique chemical structure of tomato leaves, with spraying Angle gradually increasing, the three types of nozzle in spray liquid deposition on the surface of the blade quantity are gradually reduce, liquid deposition weight is linear negative correlation with the spray Angle. And when the sector nozzle using, the deposition changed by spray angle is not significant (p<0.05). Thus smaller grain size benefit for reduce lose of liquid caused by spray angle.2. In greenhouse, with the distance between plant leaf and nozzle gradually increasing, liquid atomization effective area on the surface of the leaf is gradually reduce, but when using sector and double hole nozzle spraying, the correlation between distance and effective area is not significant. Due to the leaves keeping out each other higher leaves atomization affective area is higher than the middle higher than the lower layer. With using double hole conical nozzle and fan-shaped nozzle spraying, leave atomization effective area is higher than single hole nozzle. Concluded that, the penetrability of double hole nozzle and sector nozzle is higher than single hole nozzle.3. In greenhouse the evaporation of liquid on leaves is liner correlation to temperature indoor. And at relatively humidity is 90%, the correlation index is higher than 0.9. And at different temperature, with humidity increasing, evaporation time becomes longer. At same atomization condition, the evaporation time is double hole nozzle>single hole nozzle>sector nozzle. And with atomization taking in greenhouse, the relative humidity change obviously. The effect caused by different nozzle is double nozzle is larger than the other two kinds of nozzle. The liquid evaporation of lower leaves of plants is shorter than the others, because of the keep out each other of leaves.