Short coarse melon affects zucchini benefit how to control zucchini short coarse melon

At present, the formation of "short and coarse melon" is related to the poor flower bud differentiation of zucchini in early spring. Due to the low air temperature and ground temperature in the greenhouse in early spring, weak light, poor ventilation and light transmittance, poor leaf photosynthesis and less nutrient accumulation. In addition, the function of zucchini root becomes weaker, and the absorption, transportation and utilization of fertilizer and water are blocked, so that the flower bud differentiation of zucchini is poor.

Zucchini short coarse melon

In addition, in the process of fruit development, the concentration of anther is too high and the time of anther is too early, which leads to abnormal development of melon strips; leaving too many melons, not thinning melons, resulting in insufficient nutrition, limited growth and development, "short and coarse melons" are easy to occur; large water and hypertrophy injure roots, the ability of water absorption and fertilizer absorption decreases, and the supply of fertilizer and water above ground of zucchini is insufficient, which is also easy to make melon strips deformed.

In production, vegetable farmers can take the following corresponding measures according to the above reasons:

First, temperature management. The optimum growth temperature of zucchini melon was 18-22 ℃ in daytime and 8-10 ℃ at night. If the daytime temperature is higher than 25 ℃, the accumulation of photosynthate is less but the consumption is high, and the zucchini is easy to grow. Therefore, under the condition that the temperature of zucchini in autumn or overwintering stubble is still high, temperature control management should be carried out instead of raising temperature to promote plants. Temperature control measures: strengthen ventilation, do not close the front vent prematurely.

Second, avoid excessive soil moisture. After planting slow seedlings of zucchini, it is necessary to control water and promote roots. If the soil is not too dry, do not rush to water before the result. Of course, if the zucchini wilting seriously due to lack of water, it should be watered down to ensure its normal growth, do not flood irrigation, resulting in its prosperous growth. At the same time, zucchini root melon sitting after the first water can not be too large, otherwise it is easy to cause melons, and then lead to its prosperity and growth, in order to promote reproductive growth smoothly, can be irrigated by small water method.

Third, control nitrogen and supplement potassium in the later stage. After entering the melon-bearing period, zucchini need a large amount of potassium, so we should pay attention to the use of high-potassium fertilizer, but not excessive use of nitrogen fertilizer, so as not to cause plant growth. Of course, if zucchini is planted too early and the early temperature is too high, it can also be regulated by hormones, but not too much, especially paclobutrazol, should not be used many times in a row. Generally, 5-7 days after the slow seedling of zucchini, 1500 times of paclobutrazol was sprayed, but do not spray the growth point alone to regulate plant growth.