Sparse bitter gourd July management points

Bitter gourd has particularly strong branching, many side vines, and some lateral vines are melons. In order to create a well-ventilated and well-growing environment and reduce nutrient consumption, all lateral branches below 1 m should be removed, and 2-3 branches above 1 m should be roped to the bamboo poles. After the middle period, no longer pruning, but the old leaves and yellow leaves of the base should be removed to facilitate ventilation.

Bitter gourd hi moist, avoid water, usually pay attention to digging through the drainage ditch, in case of heavy rain, should promptly rule out the field water. Water can be used according to the dry and wet conditions of the soil. In general sunny days, the sun evaporates in large amounts and the water disappears quickly. The water needs to be poured in time to ensure its physiological water requirement, avoid drought and wilting, and affect plant growth and flowering results. In the high-yield period, supplement with sufficient nitrogen, phosphorus and potassium fertilizers. The simple way is to spread various fertilizers in the bitter gourd field. It is also possible to use fully cooked farmyard fertilizers. The amount of fertilizer should pay attention to the principle of “a small amount of ground facilities”. The bitter gourd should be sufficient for fertilization when it enters the growth stage, and it should be watered in time during the high-temperature and dry season. The best surface of the buckwheat noodle should be moistened with wheat straw to prevent water accumulation.

Bitter gourd fields, surrounding fields and gutters must have no grass. They can be destroyed with glyphosate drugs. Pay attention to the arrangement of the plants. The old, yellow and diseased leaves in the lower part of the shed should be promptly removed, and the melon-free branches suspended in the lower part should be removed. If possible, shoots with no melon or female flowers above should also be removed. Diseases and insects should also be promptly removed. All the leaves, branches, and fruits that have been removed must be removed by bagging.

Pay attention to promoting flowers, often spraying "flowering essence", "promoting fruit spirit", "spraying treasure", "amino acid", apigenin, borax, phosphorus dipotassium, calcium nitrate and other agents.

Bitter gourd often has wilt disease, anthrax, powdery mildew and so on. Insect pests are mainly melon flies.

Powdery mildew develops during flowering and squashing. The leaves are covered with white powder, causing chlorotic chlorosis and premature aging of the plants. Control methods: When there is a white powdery substance on the leaves, it should be sprayed once every 7-10 days foliar spray of cyanide-conazole solution, triadimefon solution, cuibei, or sulphur-suspending agent aqueous solution for continuous spraying 2-3 times. Note that the amount of syrup water must be large.

The disease began on the leaves mostly from the tips of the leaves or leaves. The shape of the lesions was irregular, and the periphery was not obvious. It was dark green, water stained, and later brown. Lesions can be expanded to the entire or most of the leaves. When wet, a white mold grows at the border of the lesions. Control agents: Chlorothalonil, Epimedemis, Boer Multifluid, Nongliphene, Anc, Cipromorph, Alpha-Phosphorus, Antivirus, or Kimradler Miller. The diseased leaves are taken away and destroyed.

The control of aphids uses triazophos, insecticides, insecticides, fipronil, chlorpyrifos, and Bt spray. The control of aphids was sprayed with imidacloprid, acetamiprid, and avermectin. The method for controlling the fruit fly is to spray the young melon 2-3 times every 4 to 5 days in the young period, and then remove the malformed fruit in time. Burned or buried deep outside.

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