During the planting process, the phenomenon of lodging is widespread. The lodging tends to reduce wheat yield and quality, which seriously affects the income of wheat growers. There are many reasons for the lodging of wheat. The high incidence period is mainly in the middle and late stage of filling. Let's take a look at the causes and remediation techniques of wheat lodging.
First, the reason for wheat lodging
During the post-flowering period of wheat, the lodging resistance of the stalk will gradually weaken, and the maturity period is the weakest. If the wheat granules are significant at this time, if the basal tissue is underdeveloped or weak, it is difficult to support the upper part and bend and break. There is a lodging. The influencing factors affecting the lodging strength of stems are biased nitrogen fertilizer, over-expansion, sheath blight and other pests and wheat varieties.
Second, wheat lodging prevention technology
Mainly do a "one spray three defenses", especially from the beginning of the period of three "one spray three defenses", has a good effect on wheat lodging resistance, and the flower filling period can reduce the damage of pests and diseases, can protect the roots and leaves To delay the aging of rice and reduce the risk of lodging.
After the flowering, carry out "one spray three prevention", you can choose brassinolide (the effect is anti-dry hot wind, anti-backup), potassium dihydrogen phosphate or amino acid (increased plant nutrition, increase stress resistance and lodging resistance), choose Pyraclostrobin, tebuconazole, fluorocyclo-carbendazim and other agents mainly control rust, powdery mildew, etc., thiamethoxam, imidacloprid, perchloric acid, thiamethoxam and other agents to control aphids and other pests.
Third, the remedy for wheat lodging
1. Falling down due to wind and rain, after the rain has cleared, use bamboo poles to gently shake off the water drops on the stems and leaves, reduce the pressure to help them look up, but avoid picking up and upset, and avoid lifting by hand. Wheat strain or bundled tie.
2, can spray sodium nitrophenolate, naphthaleneacetic acid, brassinolide, indole acetic acid or spray with a growth regulator such as red å² èŠ¸ 芸 芸 ,, even spray 2 times. At the same time, potassium dihydrogen phosphate and amino acid foliar fertilizer can be added to promote growth and grouting, and the yield reduction caused by lodging can be minimized.
3, timely control of pests and diseases after lodging, is a key measure to reduce the loss of lodging, if not controlled, the increase in pests and diseases will be "added to the snow." For the control of wheat rust, spray with diniconazole, tebuconazole, epoxiconazole, pyraclostrobin, etc., to treat powdery mildew and leaf blight; control insects such as aphids, thiamethoxam, pymetrozine, high Spraying drugs such as chlorofluorothiamethazine.
The lodging of wheat has a great influence on the quality of wheat. In order to effectively ensure the yield and quality of wheat, the lodging prevention measures and remedies must be clearly understood.
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