Artificial Cultivation of Zizania latifolia and Method for Removing Gray of Male Zizania latifolia

Zizania caduciflora, also known as high melon, bamboo shoots, bamboo shoots, bamboo shoots. It is a common aquatic vegetable. Let's take a look at the planting techniques of Zizania caduciflora.

Artificial planting of Zizania latifolia

time

In southern China, double-season Zizania caduciflora is generally planted before the end of November or from June to August, but it can only be harvested in autumn, and the planting will be completed by the end of April or August at the latest.

Single-season Zizania caduciflora is generally cultivated in spring, pregnant in short days in autumn and harvested in the eighth month of the lunar calendar.

Seed and plant

Zizania caduciflora is propagated by ramet method, and the quality of the plant directly affects the setting rate, yield and quality of Zizania caduciflora. Due to the differences in the invasion time, quantity and cultivation management level of smut fungus, it often causes species degradation, which leads to the emergence of male Zizania latifolia and Zizania latifolia, so the species should be strictly selected every year.

The requirements for the selection of excellent mother plants are as follows: neat plant shape, early pregnancy, more Zizania latifolia, fat flesh, good-looking Zizania latifolia, low and mature Zizania latifolia, no male Zizania latifolia, no Zizania latifolia, no Zizania latifolia. Zizania caduciflora seedlings

The seeds and seedlings of Zizania latifolia should be strictly selected three times a year; the first selection should be carried out during the harvest of Zizania latifolia planted in the same year, and the excellent individual plants should be selected and marked according to the seed selection criteria; the second time, the first selected plants should be re-selected during the spring harvest to remove the substandard Zizania latifolia plants; the third time, combined with the winter Zizania caduciflora field management, the male plants, miscellaneous plants, ash plants, shell green, abnormal Zizania latifolia and other piers should be dug in time. Generally, about 250 seed stumps are needed to plant one mu of field.

Leave 10cm before planting, cut off the withered leaves of the selected good seed stump, dig out the seed stump, split the strong old stem seedlings, and take a rooting old stem as a seedling. The planting density is 1m in wide row, 0.8m in narrow row, 0.6m in plant spacing, and about 1400 piers per mu. The planting depth should be the white part of the old stem into the mud (that is, the original depth).

Zizania latifolia field

The early or late of double-season Zizania latifolia cultivated in southern China is related to soil layer, water layer depth, water temperature control and so on. Generally speaking, paddy fields with high altitude are earlier than those with low altitude, those with windward mountain back are earlier than those with shelter from the wind, and those with shallow soil layer (preferably 20~27cm) are earlier than those with deeper soil layer. Therefore, the cultivation of Zizania caduciflora in the southern region should strive to choose paddy fields with sufficient water source, convenient drainage and irrigation, ventilation and shallow soil layer.

Generally, the paddy field is ploughed in time after rice harvest, and the old Zizania caduciflora field is ploughed in time after the harvest of Zizania latifolia, the fields are fully sunny, and the ridges of the fields are built to ensure that the fields can be irrigated with 15~20cm. During the whole field, 100 piculs of rotten pig and cow manure or chicken manure 1000kg and phosphate fertilizer 50kg were applied as base fertilizer, raked flat and irrigated with 2~3cm to reach Tian ping, mud rot and fat.

Irrigation

The water level of Zizania caduciflora can not be cut off during the whole growth period, and the water level should be adjusted with different growth stages.

Topdressing

In the southern region, topdressing of Zizania caduciflora should be done sooner rather than later, so as to promote early seedling development and early pregnancy. Combined with water layer management, promote effective tillering in the early stage, control ineffective tillering in the later stage, promote pregnancy, and improve yield and quality. Zizania caduciflora has a long growing period, tall plants and a large amount of fertilizer, so it must be fertilized at the right time in addition to applying sufficient basal fertilizer.

Weeding in the field

The cultivated field of Zizania caduciflora can use iron rake or manual hand to turn the soil between the rows of Zizania caduciflora, so as to achieve the field management of ploughing, loosening soil and Zizania caduciflora.

The purpose of weeding, and can increase the soil temperature and accelerate the decomposition of fertilizer. Generally, the cultivation of the field was carried out for 2 or 3 times, the first time when the plant began to turn green, and then once every 15 days.

Remove the ash of Zizania latifolia

Male Zizania latifolia and Zizania latifolia can not bear fruit and should be removed at any time. The vacancy removed can be filled by the seedlings on the normal stem with more tillers.

Peel dead leaves

Stripping withered leaves and pulling yellow leaves to remove the withered leaves and improve the ventilation and light transmission conditions between plants. Generally, in the late stage of spring harvest, according to the growth of the plant, the withered and old leaves are stripped clean and bare, requiring that the pulled yellow leaves should be removed and stepped into the field as fertilizer.

Thinning and replenishing seedlings

When there are more than 15 tillers per stump of Zizania caduciflora planted in the south, the seedlings should be thinned, the small tillers that are too dense should be removed, and about 15-20 effective tillers should be left on each pier. After thinning seedlings, a piece of mud should be pressed in the middle of the pier, so that the plants are evenly distributed, ventilated and transparent.