Spring Day Sweet Potato Tube

First, field management

After the leeks return to green, the weeds in the above-ground leaves should be removed as soon as possible, and the pods should be raked. The pods should be cleaned so that the base of the plants can receive the sunlight better, the ground temperature can be increased, and the sprouting can be promoted. When the soil thaws and sends out new shoots, it can chase a fecal dilute water to promote new shoots. Watering time and amount of watering should be determined according to the weather and soil moisture at that time. For plants more than 3 years old, special management such as root-cutting and earth-cultivation are also required.

Second, the pests of leeks

Leek maggot: dissecting spring irrigation pesticide poisoning, i.e. late April spray can kill adult emergence of 600 times to death; 40% of available early May staple 800 times IRRIGATING poison control.

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Third, weeds chemical weeding

The new root leeks herbicide before weeding. The herbicidal emulsifiable concentrate with 33% pass, 100 to 150 ml per acre spray of water, 45 to 50 days period, with 48% Butralin EC 200 ml per mu, after the drug administration shallow mixed with the soil cultivator, valid for 30 days. 50% Ligulon WP, or 25% fennel EC can be used for 750-1000 ml per acre when grass sprouts occur after germination. Old root leeks have strong resistance to the drug. Healing of wounds after each cut of leeks can use 48% trifluralin EC 100 to 150 ml per mu, or 50% Prafulatine WP 100 to 150 g, 33% Weeding through EC per mu 100-200 ml, 25% 500% herbicide emulsifiable concentrate, 48% diammonium EC 200 ml per mu, 50% herbicide No. 1 WP 150 g per mu.

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