What problems should be paid attention to in spring bitter gourd cultivation

First, select improved varieties and raise seedlings in a suitable period. High-yield, high-efficiency and high-quality hybrid varieties should be selected for spring planting balsam pear. For example, Yuefeng No. 1, Green Green No. 2 and Emerald cultivated by the Provincial Academy of Agricultural Sciences were sown and raised seedlings when the daily average temperature was more than 10 ℃. Strive for timely early sowing in order to prolong the vegetative growth period. Raise seedlings with a nutrition cup (bag) and choose a garden with a leeward to the sun, close to the water source and convenient management as a seedbed. Promote bud dew white can be on demand, root tip down, gently press into the nutrient soil, and build a 40mur50cm arch bamboo frame, covered with film heat preservation and moisturizing, cold-proof and strong seedlings, uncover the film and refine the seedlings a week before transplanting. Second, apply sufficient base fertilizer and transplant at the right time. The base fertilizer is generally 1500 kg of mature farm fertilizer, 25 kg of phosphate fertilizer and 10 kg of potash fertilizer. The above fertilizers are evenly mixed and applied to the hole, and then covered with a thin layer of fine soil. Before sowing, the soil is prepared, the width of the border is 2 meters, and the furrow width is 2 meters, with two rows in each row, with a distance of 120 cm between rows and 40 cm between holes. It is appropriate to plant 1,100 trees per mu, transplanting when the seedlings have 4 true leaves, and applying light human feces and urine to make "marriage fertilizer" in 5 days after transplanting. Third, set up a frame to draw vines and topdressing at the right time. When the seedlings begin to draw the vine, the herringbone bamboo frame is used, and when the vine begins to climb, the vine should be tied and led to the shelf manually. After the vine is put on the shelf, the side vine extracted from the stem less than 40 cm is removed, and the over-dense old leaves and upper thin side vines are properly removed, ventilated and transparent. Topdressing with water and fertilizer is better, so as to apply frequently and thinly to promote early growth and rapid development of seedlings. After blooming and bearing melons, it is necessary to top fertilize once, generally using compound fertilizer 20 Mu 25 kg, in the melon picking period should be topdressing every 7 days, can prolong the harvest period. Fourth, prevention and control of diseases and insect pests. 600 times of chlorothalonil powder can be used to control powdery mildew, and 800 times of trichlorfon can be used to control diseases and insect pests such as melon fruit fly, Spodoptera litura and so on. Click to get more balsam pear planting techniques click to get more vegetable planting techniques