After planting or seedling emergence of the water spinach, several times of cultivating loose soil should be carried out in order to raise the temperature of the soil, promote hair roots, and remove the weeds in the field. The water requirement of the water spinach seedlings is less and can be properly irrigated. The soil should be kept moist after the start of harvesting. After the first harvest, 15 kg of urea or 20 kg of diammonium phosphate is applied per acre, and top dressing is applied with irrigation water. We topdress fertilizer every 20 days or so. In the middle and late stages of growth of water spinach, plant adjustment should be carried out at any time in combination with harvesting. On the one hand, it is possible to use the topsoil to cultivate the base of the plant to promote the occurrence of adventitious roots and make the plant grow robustly. On the other hand, the side branches are over-produced and the crowded and delicate parts of the vines are thinned, so that the vines are balanced in growth, and the ventilation and light transmission are good. , improve quality. When the seedling shoots reach 35 centimeters in length, they are harvested for the first time, leaving vines at 3-4 knots to pick shoots. The axillary buds left behind soon became new shoots, and there were differences between the new shoots at different nodes in the morning and at night. When the new shoot grows to 20 cm, it can be harvested again. After the plants are harvested 3-4 times, only 1-2 knots are left at the base of the stems during harvesting, which is conducive to the regeneration of plant dendrons and prevents the growth of the dendrite which is excessive. Of course, if there is a big difference in the growth of different plants, the severity of harvesting should also be different. In other words, plants with strong growth ability can be harvested lightly and harvested early. Plants with weak growth ability can be re-harvested and harvested late to concentrate concentrated nutrients, grow stronger shoots and increase yield.
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