1. Promote fruit setting and prevent fruit drop

6-benzylaminopurine

Promoting fruit setting on melon plants has a long history, the specific use is as follows:

On the day of flowering (fertilization), apply 1 bar of 1% solution of 6 benzylaminopurine powder to coat 100 fruit stalks, or use medicinal solution 200~500 mg/L of 6 benzylaminopurine for 1-2 days before and after flowering. 

2,4-D

On the day of watermelon flowering, after artificially assisted pollination, the entire flower device of female flowers is sprayed with 0.2mg/L liquid. If the concentration exceeds 25mg/L, it will cause phytotoxicity.

Condensamine

When the watermelon is flowered to the fruiting stage with the ketamine, spraying with 100mg/L whole plant can inhibit the growth of the vine, promote the fruit set to increase the yield and improve the quality, and the maturity period can be 5~7d in advance.

Triacontanol

Triacontanol has high physiological activity, can promote cell growth, increase crop water absorption, increase leaf chlorophyll content, increase photosynthesis intensity and ability to synthesize protein, thus facilitating early maturity and yield increase. In the case of poor soil and weak growth, spraying 0.3~0.6 mg/L of triacontanol after 3 pm in full bloom can increase yield by 6.5%~10.2%.

2. Seedless watermelon

Seedless watermelon is popular in the market. It is usually treated with colchicine, which makes the watermelon progeny into tetraploid, and then hybridizes with diploid watermelon, which produces triploid seedless watermelon. Seedless watermelon can also be obtained by treatment with plant growth regulators. The specific method is to use 1%, 2% tea acetic acid (sodium) lanolin paste or 1% tea acetic acid (sodium) plus 1% IAA lanolin paste to apply female flowers. Seedless fruit. If at the flowering stage, the watermelon female flower has a small amount of pollination, but the amount of hormones is small, still can not make the ovary expand, can supplement the supply of plant hormones, can also promote fruit expansion and produce watermelon with less seed.

3. Promote fruit enlargement

Citrate ester

When the watermelon melon grows to 0.25~0.5kg, apply 50~100mg/L of the cooked ester solution, after spraying

The melon vine was inhibited. The pre-maturing 7d, the sugar content increased by 10%~20%, and the central sugar degree and the edge sugar gradient were small, and the yield increased by about 10% per 667 m2.

Sodium nitrophenolate

Spraying 3~6mg/L of sodium nitrophenolate solution in the early flowering stage, fruit setting period and fruiting stage of watermelon

Significantly increase the yield of watermelon, and the quality is good, increase the sugar content, premature 4~7d.

Growth promotion control

In recent years, it will help me, choline chloride and naphthaleneacetic acid (sodium), IAA, gibberellin, 6-benzyl gland

When the neon is compounded, the effect of not only promoting fruit enlargement is more obvious than that of metocin and choline chloride, but also improving the quality of the fruit.

4. Increase the sugar content
Glyphosate , Zeng Gan Teng

 Spraying the whole plant with glyphosate 50~70 mg/L and Zengganteng at 900~1 000 mg/L on the diameter of watermelon young fruit 7~10 cm can significantly increase the sugar content of watermelon. This is because the two regulators can inhibit the activity of acid invertase while increasing the sucrose content while inhibiting the growth of the vine.

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