Tomato leaf mold is the main disease that damages tomato leaves. After the leaves are damaged, small yellow spots with inconspicuous edges appear on the front of the leaves. Irregular or elliptical yellowish or light green chlorotic lesions appear on the back of the leaves, and the primary white mold layer becomes taupe. a layer of velvet mold. The lower leaves of the plant first developed and gradually spread upward. It is easy to develop under warm and humid conditions, and the cultivation of greenhouses is serious.
Geocell is made of a new type of high-strength geosynthetics, which is popular with both domestic and abroad, which welding the strengthened HDPE sheets by the high-power ultrasonic and forming to be a structure of three-dimensional reticular formation. Easily folding and convenient for transportation. When be in construction, the geocell can be pull into a network and launched into a three-dimensional honeycomb grid. As it filled in soil, macadam, concrete or other granular materials, constituted to be a construction, which has strong sidewise restraint and high rate of stiffness.
1. It reinforce old asphalt concrete road surface and asphalt layer, and prevents damage ;
2. It is used for rebuilding cement concrete road surface into composite road surface and restraining reflection caused by block contraction .
3. It is used in road expansion and improvment project and crack caused by old and new combination position and uneven sedimentation ;
4. It is used in soft soil base reinforcement treatment , is favorable for soft soil water separation and concretion,restrains sedimentation effectivly,distributes stress uniformly and improve overall strength of road base;
5. It is sued for preventing contraction crack caused by new road semi-rigid base layer,and reinforces and prevents road surface crack caused by foundation crack reflection.
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How to prevent tomato leaf mold?
To prevent and cure tomato leaf mold, we must first pay attention to maintain ventilation and ventilation, and timely remove the aging yellowed leaves. The greenhouse should be planted with attention to release air and drain, and do not suffocate after watering. When the diseased leaves are found, spray the 300~400 times 3% Wuyin extract aqueous solution, or 500~600 times 0.5% Xiaochai's aqueous solution, or 1500~2000 times 10% difenotropium water dispersant aqueous solution. , or 600~800 times 47% spring Leiwang copper wettable powder aqueous solution, or 1500 times 50% procymidone wettable wet powder aqueous solution, or 1500 times 50% iprodione wettable powder aqueous solution, etc., every 7~10 days Spray once and spray continuously for 2~3 times to evenly spray all the blades. If you can add 1500 times 0.01% natural brassinolide and 0.3% potassium dihydrogen phosphate mixture, the control effect is better, and it can promote tomato plants, increase yield and improve quality.
(Huang Jianan)
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