Recently, some readers have called this newspaper to find out how to cultivate corn and soybeans after wheat stubble. How to prevent various weeds in the field? To this end, the reporter interviewed Dr. Fengyan Zhou and Assistant Professor Liu Xiaolin of the Provincial Academy of Agricultural Sciences.
Liu Xiaolin told reporters that after the farmers harvested the wheat, they had to use the rotary cultivator to plough the land. After the ploughing, they basically cleared the weeds in the field, and the farmers could then plant the next crop. Zhou Fengyan introduced to reporters that common weeds in summer corn fields are: crabgrass, goosegrass, purslane, amaranthus, field bindweed, alfalfa, green foxtail, and iron leeks.
Farmers can control grassy weeds and some broad-leaved weeds. Before or after sowing, they can use 90% Koenix and soil organic matter below 6%. The dosage is 93-127 g (ml). / Mu; soil organic matter above 6% of the field, the use of 127-167 grams (milliliters) / acre. If 96% guildry is used for weeding, if it is sandy soil, its usage is 50-60 (g) ml/mu; if it is loamy soil, its use amount is 70 (g) ml/mu; if it is clay soil The use of 70-80 (g) ml / acre. To remove broad-leaved weeds in corn fields, 72% 2,4-D-butylate 67-100 g (ml)/mu or 80% Kusaoqing 4-5 g (ml) may be used before seeding. mu.
In the eradication of grassy weeds and broad-leaved weeds, farmers can use 4% of Nongol 100g (ml)/mu after seedling, or 4% of Yunong+38% of Atrazine 50+100g (ml) /mu. In the post-emergence period of 4-5 leaves of corn, at the 2-4 leaf stage of weeds, farmers can use 4% of corn flour + 70% of Sec 50-67 + 7 grams (milliliters) per mu; corn seedlings after 4-5 leaf stage. , Weeds 2-4 leaf stage, farmers can use 15% sulcotrione 120-187 g (ml) / mu, or 40% nitroxamate suspension 267-400 g (ml) / mu, post-emergence stems and leaves spray.
Zhou Fengyan told reporters that common weeds in summer soybean fields include: barnyardgrass, crabgrass, goosegrass, setaria, amaranthus retroflexus, iron amaranth, purslane, ramie, and other flowers. The peasants can control the grasses and broad-leaved weeds before sowing and after sowing. If seedlings are to be planted before sowing, 2 cm of soil should be mixed with soil or earth after application. Farmers can use 50% of the fast +72% Dole 8-15 ml +100-150 ml / mu, or 72% Dole +48% Guang Ling Ling 140-200 ml +53-67 ml / mu.
Early in soybean seedlings, farmers can control weeds and broad-leaved weeds as well as endemic vegetables, ephedra, and prickly vines during the 2-4 leaf stage of weeds. The specific medication is: 6.9% Weiba +24% Kekuile ​​48-70ml +27-33ml/mu, or 10.8% high-efficient Gaifu +21.4% Weeds 30-35ml +67-100ml/mu .
Liu Xiaolin specifically reminded farmers that the use of herbicides was the best at the 2-4 leaf stage of soybean and corn. At the same time, the farmers must maintain water consumption at 40-45 kg when the chemicals are used to water. After a certain amount of herbicide is used for a long time, weeds are liable to produce drug resistance, and farmers should also promptly change other medicines.
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