Types of herbicides in gray vegetables

Grey vegetables, also known as Chenopodium, alias wild gray vegetables, polygonum grass, etc., are annual herbs of Chenopodiaceae. Mainly born in the field, on the edge of the ground, by the side of the road, in front of the house and behind the house, etc. It is a crop that many farmers hate. So what are the kinds of herbicides in gray vegetables?

1. Types of herbicides in gray vegetables

Grey vegetable control mainly depends on what crops are used, different crops use different herbicides, to ensure that the herbicides used are harmless to crops. Herbicides should be used according to the actual situation.

Such as broadleaf weeds in wheat field, all broadleaf weeds in wheat field can be controlled by azolidone + benzenesulfuron + dimethyltetrachloride. Chlorofluoropyloxyacetic acid + benzenesulfuron + dimethyl tetrachlorosodium spray can also be used for prevention and control. Spraying after the 3-leaf stage of wheat before winter, when the average temperature is more than 10 degrees. If the temperature is low now, you can use the medicine before the jointing of wheat.

Second, the characteristics of gray vegetables

1. Plants: annual herbs, 30-150 cm tall. Stems erect, stout, angled and green or purplish red stripes, much branched; branches obliquely ascending or spreading.

two。 Leaves: leaf blade rhombic-ovate to broadly lanceolate, 3-6 cm long and 2.5-5 cm wide, apex acute or slightly obtuse, base cuneate to broadly cuneate, usually without powder above, sometimes purplish pink above young leaves, more or less powdery below, margin irregularly serrate; petiole subequal to leaf blade, or 1 × 2 of leaf blade length.

3. Flowers: flowers bisexual, flowers arranged in large or small spikelike panicles or panicles above branches; perianth lobes 5, broadly ovate to elliptic, abaxially longitudinally ridged, farinose, apex or retuse, margin membranous; stamens 5, anthers protruding from perianth.

4. Fruit: pericarp attached to seeds. Seeds transverse, biconvex, 1.2-1.5 mm in diam., margin obtuse, black, glossy, surface shallowly furrowed; embryo annular. The flowering and fruiting period is from May to October.