When the seedlings are 10 to 20 centimeters high, and when time goes to thin and thin seedlings, excess seedlings, pay attention to a certain seedling spacing when leaving seedlings, delete the seedlings to “delete secrets and thinning, remove weak and retain strong, delete the foreignersâ€. In principle, keep 3-6 strains per hole. In the late period of tillering, the clusters are crowded. The old leaves and yellow leaves at the base of the plants should be promptly removed to promote ventilation and light transmission, and promote progestation. The yellow leaves should be picked up every 7-10 days for a total of 2-3 times. The stripped yellow leaves can be used as fertilizer at any time.
After chemical weeding and waiting for seedlings, they will pick up the weeds in time and remove the weeds. Dry the water before weeding, and use 40 kg of water to spray with ethyl benzyl (18% Tiancaoxing 18%) or 10% benzyl benzalkonium 12-15 grams per mu, and cover the water once a day.
Water slurry management and white water level management are based on the principle of "shallow depth and shallowness". After the colonization of the pre-growth stage (before delivery), maintaining a shallow water level of 3 to 5 centimeters will help increase the temperature and promote rooting and delivery. By the end of delivery, the water level will be increased to 12 to 15 cm to suppress the occurrence of invalid labor and enter the pre-pregnancy period. In order to promote conceiving, the high-altitude cold water should be used in series, and the water level should be increased to 15 to 18 centimeters, but it should not exceed " The position of the "eyes" (the highest water level should not exceed 2/3 of the false stem) to prevent the fistula from elongating. During the late pregnancy, the water level should be lowered to 3-5 cm for harvesting. After harvesting, Putian should maintain a shallow water layer or a wet state for winter, and it should not be arid.
Scientific use of fat white plantation after 7-10 days of survival, per acre of human urine 500 kilograms or ammonium bicarbonate 15 to 20 kilograms of seedlings, Rugao Baitian base fertilizer is enough, can reduce the amount of fertilizer; in the early stage of labor (with the first time Sparsely 10 days or so), per acre Shi human urine 1000 kilograms or ammonium bicarbonate 20-30 kilograms, to promote the effective delivery and growth of plants, if there is no straw Miao Fei, should be applied in advance of the appropriate tiller fertilizer. In the period of high tillering, the topspots of the plants should be topdressed. Generally, ammonium bicarbonate is applied in an amount of 10 to 15 kilograms per mu. If the plants grow robustly, they may not be applied. At the beginning of pregnancy (when the new pod has 10% to 20% of the tiller, the pseudo stem has become flattened). At this time, the wolfberry fertilizer should be reapplied to promote the enlargement of the stalk and increase the yield. Generally, the urine of the emperor is 2500 per acre. - 3000 kg, or ammonium bicarbonate 30-40 kg. Sore fertilizer should be applied in due course, premature application, the plant has not yet pregnant, easily lead to appetite, thus delaying pregnancies; too late, can not keep up with the need for fertilization during pregnancy, then affect the yield.
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