What are the disadvantages of direct seed rice? Analysis of the shortcomings of rice live broadcast and high yield points

With the massive transfer of labor to cities and towns, as well as the development of herbicides, live rice has developed rapidly in China because of the labor saving, especially in the middle and lower reaches of the Yangtze River. In some provinces, the area of ​​direct seed rice has reached more than half, and with the agricultural machinery Development has continued to develop. So what is the rapid development of rice for any type of rice? Let's take a look.

水稻直播

However, there are still many shortcomings in direct seeding rice compared to throwing and planting rice. What kind of direct-fledged rice varieties we choose to plant for these shortcomings will have a good harvest? Here we focus on avoiding the shortcomings of direct seeding rice. These shortcomings are selected by selecting suitable live rice varieties.

Shortcomings of direct seed rice

The first live rice has a short growth period. Compared with the traditional transplanted rice, the growth period of direct seed rice is significantly shortened with the delay of the sowing period. For example, rice is grown on May 15th (transplanting rice), but direct seed rice It is not until the end of May and early June that sowing can be carried out. In this way, the growth period of direct-seeded rice is about half a month shorter than that of transplanted rice. With the delay of sowing, the late temperature is lower, and the heading period is relatively more backward, directly affecting The filling of rice is strong.

The second live broadcast of rice weeds is more. The direct broadcast of rice weeds has three peak periods. The first one is sowing for 3 days, mainly weeding and squash, and the second is about 4 seasons of direct seeding rice. It is about 13 days of sowing, mainly weeding. Thousands of gold, etc., the third period is about one month of sowing, mainly ragweed, etc. Compared with transplanted rice, weeds occur more frequently and there are more occurrences. If there is no strong weed control technology, it is true. It is a tricky thing.

The third is that the hazards of rice encountering cold and cold are more serious. In the early stage of direct seeding rice, low temperature freezing damage is likely to cause a large area of ​​damage to rice. If the temperature is low, it will cause yellowing, dead or even dead seedlings on rice seedlings. Therefore, when we choose rice seeding, it is resistant to low temperature. It is a very important choice.

水稻直播缺点

What kind of rice live seed can be selected to achieve high yield? You can choose Huai 9508 and super hybrid rice plant Liangyou 819.

Huai 9508 is a late-maturing variety selected by Huaiyin Agricultural Science. It has a good performance in high yield, stable yield and high quality. In the field demonstration, the average yield per mu is 650 kg. In the year when the weather is more suitable, the output can reach more than 750 kg. It can be broadcast live in early May, and this variety is indica variety.

Luliangyou 819, a two-line hybrid of japonica rice, suitable for planting in the middle and lower reaches of the Yangtze River, with a growth period of about 107 days, high resistance to rice blast, blight, etc. In 2006, the variety demonstration can be more than 500 kg, high quality and high yield field. Can reach more than 576 kg.

Management points for high-yield rice production

The selection of direct seeding rice should be combined with the direct seeding technology of rice to bring about high yield. The rice seeding technology should pay attention to the weeding and fertilization techniques of rice. The direct seeding of rice can be chemically weeded by spraying butachlor, and it can be sprayed during the growth period. Ding and other chemical herbicides are used in combination with shallow water for weeding.

The direct seed fertilization of rice is about 20% higher than that of transplanted fertilization. In the early stage, the base fertilizer is re-applied. In the medium term, proper topdressing should be paid attention to. In the later stage, the appropriate shallow water will be placed. It is believed that it is better to choose better rice varieties and later management. reward.

Rice live broadcast has shortcomings such as early spring cold, short growth period, more weeds and more fertilizer. If you choose the right rice varieties for these shortcomings and cooperate with scientific cultivation techniques, the advantages of rice live broadcast will be better reflected.

水稻直播高产要点

The above is about the introduction of rice live broadcast. With the advancement of science and technology, more and more scientific and technological knowledge has flooded into the countryside, providing convenience for farmers' planting, etc., but we still pay attention to when planting new models. Management of planting.

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