Corn [scientific name] Zea mays

【1】Promote seed germination and improve seedling resistance

Brassinolide

Before sowing, soaking seeds with 0.01-0.04 mg/L brassinolide solution for 24 hours can increase the root length of plants, the number of roots of seedlings and dry root weight.

Diethyl aminoethyl hexanoate

Soaking seeds with 5-20 mg/L diethyl aminoethyl hexanoate for 12 h can increase the root length, root fresh weight, plant height and fresh weight of corn, and can alleviate the damage caused by chlorsulfuron and pyraclostrobin to inhibit the growth of corn to varying degrees. , can promote the normal germination of corn.Mixed with 10 mg/L diethyl aminoethyl hexanoate and herbicide sprayed at the 3-leaf stage of corn, and mixed with dicamba, imazethapyr and clethodim, it can reduce the phytotoxicity of herbicides to corn and promote the growth of corn; The mixed use of mesotrione and nicosulfuron can not only improve the control effect of herbicides on weeds, but also promote the growth of corn.

Zeatin

Seed soaking treatment with 0.0067~0.01 mg/L for 12~24 h can promote the formation of chlorophyll and enhance the photosynthesis of crops, thereby promoting the growth and resistance of seedlings.

DCPTA  

Soaking with 15~20 mg/L DCPTA liquid for 7 hours before sowing or spraying 50 mg/L DCPTA in 2 leaves and 1 heart stage of seedlings can increase the activities of 3 antioxidant enzymes (SOD, CAT and POD) in leaves of maize seedlings , significantly increased soluble sugar, soluble protein content and DPPH reactive oxygen species scavenging efficiency in maize seedling leaves, reduced MDA content in leaves, promoted cell membrane integrity, and improved maize drought resistance.

【2】 Prevent corn lodging

Ethephon

At the 6-leaf stage of maize, spraying with 400 mg/L ethephon liquid once could reduce the lodging and stabilize the yield of summer maize.Among them, the plant height, ear position and center of gravity of the “Xianyu 335” variety decreased by an average of 55.6 cm, 37.0 cm and 15.0 cm, respectively, the basal internodes were shortened by 21.7%, the thickness increased by 11.4%, and the root pulling force increased by 22.6% on average. The aerial rooting resistance of roots increased by 21.8% on average, which enhanced the holding capacity of summer maize.The cellulose content, potassium content and soluble sugar content of stems increased by 61.9%, 31.0% and 30.2% on average. The plant height, ear position and center of gravity of the “Jinhai No. 5” variety decreased by 65.9 cm, 35.0 cm, and 12.9 cm, respectively, the base internode was shortened by 25.6%, and the thickness increased by 11.3%. The root pulling force increased by 28.8% on average. The holding capacity, cellulose content, potassium content and soluble sugar content of the culm were also significantly increased.

Amine fresh and ethephon  

Spray with 200-~300 mg/L active ingredient liquid at the 6-10 leaf stage of corn. It can promote the formation of nodal roots, increase the number of root layers, directionally control the growth of the internodes at the base, enhance the strength and toughness of the stem, shorten the length of the internodes at the lower part of the ear, reduce the ear position, and effectively prevent the lodging of corn.Improve root vigor, improve leaf function, coordinate yield components, promote ear grain development, effectively prevent bald tip, increase ear grain number and ear grain weight, thereby significantly improving yield and quality; Resilience.

Brassica Ethephon  

In the late stage of corn bell mouth (7-10 d before corn tassel), the foliar spray of 240-300 mg/L of active ingredients was evenly sprayed on the leaves, which had the effect of dwarfing and increasing yield.

Chlorochol, Ethephon

When corn has 6~7 leaves, 15~17.5g of active ingredients per acre is diluted and sprayed evenly on the upper leaves of the corn plant, which can make the plant shape short and healthy, the internodes shorten, the stems have thick roots, and the leaves are dark green. Enhanced photosynthesis, effectively preventing corn lodging.

【3】 Promote early maturity and yield of corn

Sodium Nitrophenolate 

At the 7-9 leaf stage, from the big bell mouth stage to before tasseling, spraying 30 mg/L sodium nitrophenolate solution once respectively can increase the plant height by 2 cm, decrease the ear height by 3 cm, and increase the rhizome diameter by 0. .12 cm, the stem diameter at the ear position increased by 0.27 cm, and the yield was increased by 3.72%, and the effect was significant.

Diethyl aminoethyl hexanoate

At the 6-leaf stage of maize, 53 mg/L of diethyl aminoethyl was sprayed. Under different planting densities, the elastic modulus of corn stalks of “Qingnong 11” and “Zhengdan 958” sprayed with diethyl aminoethyl Both were significantly improved, while at low density, the bending strength of the two varieties was not significant, and at high density, the bending resistance was significantly improved, and the rigidity of the stem was improved.And it can promote growth and development. The yield of “Qingnong 11” is increased by 10.3%~15.1%, and the yield of “Zhengdan 958” is increased by 9.9%~11.4%.

Brassinolide  

When applying 0.01-0.04 mg/L of liquid medicine once in corn seedling stage, small bell mouth, and large bell mouth, it can significantly increase the thousand-kernel weight and plumpness of corn, promote the early growth period, and increase the yield of corn.